| S20 | Superficial injury of thorax | NON-BILLABLE CODE |
| S20.0 | Contusion of breast | NON-BILLABLE CODE |
| S20.00 | Contusion of breast, unspecified breast | NON-BILLABLE CODE |
| S20.00XA | Contusion of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.00XD | Contusion of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.00XS | Contusion of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.01 | Contusion of right breast | NON-BILLABLE CODE |
| S20.01XA | Contusion of right breast, initial encounter | BILLABLE CODE |
| S20.01XD | Contusion of right breast, subsequent encounter | BILLABLE CODE |
| S20.01XS | Contusion of right breast, sequela | BILLABLE CODE |
| S20.02 | Contusion of left breast | NON-BILLABLE CODE |
| S20.02XA | Contusion of left breast, initial encounter | BILLABLE CODE |
| S20.02XD | Contusion of left breast, subsequent encounter | BILLABLE CODE |
| S20.02XS | Contusion of left breast, sequela | BILLABLE CODE |
| S20.1 | Other and unspecified superficial injuries of breast | NON-BILLABLE CODE |
| S20.10 | Unspecified superficial injuries of breast | NON-BILLABLE CODE |
| S20.101 | Unspecified superficial injuries of breast, right breast | NON-BILLABLE CODE |
| S20.101A | Unspecified superficial injuries of breast, right breast, initial encounter | BILLABLE CODE |
| S20.101D | Unspecified superficial injuries of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.101S | Unspecified superficial injuries of breast, right breast, sequela | BILLABLE CODE |
| S20.102 | Unspecified superficial injuries of breast, left breast | NON-BILLABLE CODE |
| S20.102A | Unspecified superficial injuries of breast, left breast, initial encounter | BILLABLE CODE |
| S20.102D | Unspecified superficial injuries of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.102S | Unspecified superficial injuries of breast, left breast, sequela | BILLABLE CODE |
| S20.109 | Unspecified superficial injuries of breast, unspecified breast | NON-BILLABLE CODE |
| S20.109A | Unspecified superficial injuries of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.109D | Unspecified superficial injuries of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.109S | Unspecified superficial injuries of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.11 | Abrasion of breast | NON-BILLABLE CODE |
| S20.111 | Abrasion of breast, right breast | NON-BILLABLE CODE |
| S20.111A | Abrasion of breast, right breast, initial encounter | BILLABLE CODE |
| S20.111D | Abrasion of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.111S | Abrasion of breast, right breast, sequela | BILLABLE CODE |
| S20.112 | Abrasion of breast, left breast | NON-BILLABLE CODE |
| S20.112A | Abrasion of breast, left breast, initial encounter | BILLABLE CODE |
| S20.112D | Abrasion of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.112S | Abrasion of breast, left breast, sequela | BILLABLE CODE |
| S20.119 | Abrasion of breast, unspecified breast | NON-BILLABLE CODE |
| S20.119A | Abrasion of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.119D | Abrasion of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.119S | Abrasion of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.12 | Blister (nonthermal) of breast | NON-BILLABLE CODE |
| S20.121 | Blister (nonthermal) of breast, right breast | NON-BILLABLE CODE |
| S20.121A | Blister (nonthermal) of breast, right breast, initial encounter | BILLABLE CODE |
| S20.121D | Blister (nonthermal) of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.121S | Blister (nonthermal) of breast, right breast, sequela | BILLABLE CODE |
| S20.122 | Blister (nonthermal) of breast, left breast | NON-BILLABLE CODE |
| S20.122A | Blister (nonthermal) of breast, left breast, initial encounter | BILLABLE CODE |
| S20.122D | Blister (nonthermal) of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.122S | Blister (nonthermal) of breast, left breast, sequela | BILLABLE CODE |
| S20.129 | Blister (nonthermal) of breast, unspecified breast | NON-BILLABLE CODE |
| S20.129A | Blister (nonthermal) of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.129D | Blister (nonthermal) of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.129S | Blister (nonthermal) of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.14 | External constriction of part of breast | NON-BILLABLE CODE |
| S20.141 | External constriction of part of breast, right breast | NON-BILLABLE CODE |
| S20.141A | External constriction of part of breast, right breast, initial encounter | BILLABLE CODE |
| S20.141D | External constriction of part of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.141S | External constriction of part of breast, right breast, sequela | BILLABLE CODE |
| S20.142 | External constriction of part of breast, left breast | NON-BILLABLE CODE |
| S20.142A | External constriction of part of breast, left breast, initial encounter | BILLABLE CODE |
| S20.142D | External constriction of part of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.142S | External constriction of part of breast, left breast, sequela | BILLABLE CODE |
| S20.149 | External constriction of part of breast, unspecified breast | NON-BILLABLE CODE |
| S20.149A | External constriction of part of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.149D | External constriction of part of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.149S | External constriction of part of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.15 | Superficial foreign body of breast | NON-BILLABLE CODE |
| S20.151 | Superficial foreign body of breast, right breast | NON-BILLABLE CODE |
| S20.151A | Superficial foreign body of breast, right breast, initial encounter | BILLABLE CODE |
| S20.151D | Superficial foreign body of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.151S | Superficial foreign body of breast, right breast, sequela | BILLABLE CODE |
| S20.152 | Superficial foreign body of breast, left breast | NON-BILLABLE CODE |
| S20.152A | Superficial foreign body of breast, left breast, initial encounter | BILLABLE CODE |
| S20.152D | Superficial foreign body of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.152S | Superficial foreign body of breast, left breast, sequela | BILLABLE CODE |
| S20.159 | Superficial foreign body of breast, unspecified breast | NON-BILLABLE CODE |
| S20.159A | Superficial foreign body of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.159D | Superficial foreign body of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.159S | Superficial foreign body of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.16 | Insect bite (nonvenomous) of breast | NON-BILLABLE CODE |
| S20.161 | Insect bite (nonvenomous) of breast, right breast | NON-BILLABLE CODE |
| S20.161A | Insect bite (nonvenomous) of breast, right breast, initial encounter | BILLABLE CODE |
| S20.161D | Insect bite (nonvenomous) of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.161S | Insect bite (nonvenomous) of breast, right breast, sequela | BILLABLE CODE |
| S20.162 | Insect bite (nonvenomous) of breast, left breast | NON-BILLABLE CODE |
| S20.162A | Insect bite (nonvenomous) of breast, left breast, initial encounter | BILLABLE CODE |
| S20.162D | Insect bite (nonvenomous) of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.169 | Insect bite (nonvenomous) of breast, unspecified breast | NON-BILLABLE CODE |
| S20.169A | Insect bite (nonvenomous) of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.169D | Insect bite (nonvenomous) of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.169S | Insect bite (nonvenomous) of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.17 | Other superficial bite of breast | NON-BILLABLE CODE |
| S20.171 | Other superficial bite of breast, right breast | NON-BILLABLE CODE |
| S20.171A | Other superficial bite of breast, right breast, initial encounter | BILLABLE CODE |
| S20.171D | Other superficial bite of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.171S | Other superficial bite of breast, right breast, sequela | BILLABLE CODE |
| S20.172 | Other superficial bite of breast, left breast | NON-BILLABLE CODE |
| S20.172A | Other superficial bite of breast, left breast, initial encounter | BILLABLE CODE |
| S20.172D | Other superficial bite of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.172S | Other superficial bite of breast, left breast, sequela | BILLABLE CODE |
| S20.179 | Other superficial bite of breast, unspecified breast | NON-BILLABLE CODE |
| S20.179A | Other superficial bite of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.179D | Other superficial bite of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.179S | Other superficial bite of breast, unspecified breast, sequela | BILLABLE CODE |
| S20.2 | Contusion of thorax | NON-BILLABLE CODE |
| S20.20 | Contusion of thorax, unspecified | NON-BILLABLE CODE |
| S20.20XA | Contusion of thorax, unspecified, initial encounter | BILLABLE CODE |
| S20.20XD | Contusion of thorax, unspecified, subsequent encounter | BILLABLE CODE |
| S20.20XS | Contusion of thorax, unspecified, sequela | BILLABLE CODE |
| S20.21 | Contusion of front wall of thorax | NON-BILLABLE CODE |
| S20.211 | Contusion of right front wall of thorax | NON-BILLABLE CODE |
| S20.211A | Contusion of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.211D | Contusion of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.211S | Contusion of right front wall of thorax, sequela | BILLABLE CODE |
| S20.212 | Contusion of left front wall of thorax | NON-BILLABLE CODE |
| S20.212A | Contusion of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.212D | Contusion of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.212S | Contusion of left front wall of thorax, sequela | BILLABLE CODE |
| S20.213 | Contusion of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.213A | Contusion of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.213D | Contusion of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.213S | Contusion of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.214 | Contusion of middle front wall of thorax | NON-BILLABLE CODE |
| S20.214A | Contusion of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.214D | Contusion of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.214S | Contusion of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.219 | Contusion of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.219A | Contusion of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.219D | Contusion of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.219S | Contusion of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.22 | Contusion of back wall of thorax | NON-BILLABLE CODE |
| S20.221 | Contusion of right back wall of thorax | NON-BILLABLE CODE |
| S20.221A | Contusion of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.221D | Contusion of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.221S | Contusion of right back wall of thorax, sequela | BILLABLE CODE |
| S20.222 | Contusion of left back wall of thorax | NON-BILLABLE CODE |
| S20.222A | Contusion of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.222D | Contusion of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.222S | Contusion of left back wall of thorax, sequela | BILLABLE CODE |
| S20.223 | Contusion of bilateral back wall of thorax | NON-BILLABLE CODE |
| S20.223A | Contusion of bilateral back wall of thorax, initial encounter | BILLABLE CODE |
| S20.223D | Contusion of bilateral back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.223S | Contusion of bilateral back wall of thorax, sequela | BILLABLE CODE |
| S20.224 | Contusion of middle back wall of thorax | NON-BILLABLE CODE |
| S20.224A | Contusion of middle back wall of thorax, initial encounter | BILLABLE CODE |
| S20.224D | Contusion of middle back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.224S | Contusion of middle back wall of thorax, sequela | BILLABLE CODE |
| S20.229 | Contusion of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.229A | Contusion of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.229D | Contusion of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.229S | Contusion of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.3 | Other and unspecified superficial injuries of front wall of thorax | NON-BILLABLE CODE |
| S20.30 | Unspecified superficial injuries of front wall of thorax | NON-BILLABLE CODE |
| S20.301 | Unspecified superficial injuries of right front wall of thorax | NON-BILLABLE CODE |
| S20.301A | Unspecified superficial injuries of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.301D | Unspecified superficial injuries of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.301S | Unspecified superficial injuries of right front wall of thorax, sequela | BILLABLE CODE |
| S20.302 | Unspecified superficial injuries of left front wall of thorax | NON-BILLABLE CODE |
| S20.302A | Unspecified superficial injuries of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.302D | Unspecified superficial injuries of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.302S | Unspecified superficial injuries of left front wall of thorax, sequela | BILLABLE CODE |
| S20.303 | Unspecified superficial injuries of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.303A | Unspecified superficial injuries of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.303D | Unspecified superficial injuries of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.303S | Unspecified superficial injuries of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.304 | Unspecified superficial injuries of middle front wall of thorax | NON-BILLABLE CODE |
| S20.304A | Unspecified superficial injuries of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.304D | Unspecified superficial injuries of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.304S | Unspecified superficial injuries of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.309 | Unspecified superficial injuries of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.309A | Unspecified superficial injuries of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.309D | Unspecified superficial injuries of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.309S | Unspecified superficial injuries of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.31 | Abrasion of front wall of thorax | NON-BILLABLE CODE |
| S20.311 | Abrasion of right front wall of thorax | NON-BILLABLE CODE |
| S20.311A | Abrasion of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.311D | Abrasion of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.311S | Abrasion of right front wall of thorax, sequela | BILLABLE CODE |
| S20.312 | Abrasion of left front wall of thorax | NON-BILLABLE CODE |
| S20.312A | Abrasion of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.312D | Abrasion of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.312S | Abrasion of left front wall of thorax, sequela | BILLABLE CODE |
| S20.313 | Abrasion of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.313A | Abrasion of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.313D | Abrasion of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.313S | Abrasion of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.314 | Abrasion of middle front wall of thorax | NON-BILLABLE CODE |
| S20.314A | Abrasion of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.314D | Abrasion of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.314S | Abrasion of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.319 | Abrasion of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.319A | Abrasion of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.319D | Abrasion of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.319S | Abrasion of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.32 | Blister (nonthermal) of front wall of thorax | NON-BILLABLE CODE |
| S20.321 | Blister (nonthermal) of right front wall of thorax | NON-BILLABLE CODE |
| S20.321A | Blister (nonthermal) of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.321D | Blister (nonthermal) of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.321S | Blister (nonthermal) of right front wall of thorax, sequela | BILLABLE CODE |
| S20.322 | Blister (nonthermal) of left front wall of thorax | NON-BILLABLE CODE |
| S20.322A | Blister (nonthermal) of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.322D | Blister (nonthermal) of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.322S | Blister (nonthermal) of left front wall of thorax, sequela | BILLABLE CODE |
| S20.323 | Blister (nonthermal) of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.323A | Blister (nonthermal) of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.323D | Blister (nonthermal) of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.323S | Blister (nonthermal) of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.324 | Blister (nonthermal) of middle front wall of thorax | NON-BILLABLE CODE |
| S20.324A | Blister (nonthermal) of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.324D | Blister (nonthermal) of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.324S | Blister (nonthermal) of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.329 | Blister (nonthermal) of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.329A | Blister (nonthermal) of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.329D | Blister (nonthermal) of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.329S | Blister (nonthermal) of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.34 | External constriction of front wall of thorax | NON-BILLABLE CODE |
| S20.341 | External constriction of right front wall of thorax | NON-BILLABLE CODE |
| S20.341A | External constriction of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.341D | External constriction of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.341S | External constriction of right front wall of thorax, sequela | BILLABLE CODE |
| S20.342 | External constriction of left front wall of thorax | NON-BILLABLE CODE |
| S20.342A | External constriction of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.342D | External constriction of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.342S | External constriction of left front wall of thorax, sequela | BILLABLE CODE |
| S20.343 | External constriction of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.343A | External constriction of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.343D | External constriction of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.343S | External constriction of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.344 | External constriction of middle front wall of thorax | NON-BILLABLE CODE |
| S20.344A | External constriction of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.344D | External constriction of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.344S | External constriction of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.349 | External constriction of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.349A | External constriction of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.349D | External constriction of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.349S | External constriction of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.35 | Superficial foreign body of front wall of thorax | NON-BILLABLE CODE |
| S20.351 | Superficial foreign body of right front wall of thorax | NON-BILLABLE CODE |
| S20.351A | Superficial foreign body of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.351D | Superficial foreign body of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.351S | Superficial foreign body of right front wall of thorax, sequela | BILLABLE CODE |
| S20.352 | Superficial foreign body of left front wall of thorax | NON-BILLABLE CODE |
| S20.352A | Superficial foreign body of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.352D | Superficial foreign body of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.352S | Superficial foreign body of left front wall of thorax, sequela | BILLABLE CODE |
| S20.353 | Superficial foreign body of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.353A | Superficial foreign body of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.353D | Superficial foreign body of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.353S | Superficial foreign body of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.354 | Superficial foreign body of middle front wall of thorax | NON-BILLABLE CODE |
| S20.354A | Superficial foreign body of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.354D | Superficial foreign body of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.354S | Superficial foreign body of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.359 | Superficial foreign body of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.359A | Superficial foreign body of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.359D | Superficial foreign body of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.359S | Superficial foreign body of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.36 | Insect bite (nonvenomous) of front wall of thorax | NON-BILLABLE CODE |
| S20.361 | Insect bite (nonvenomous) of right front wall of thorax | NON-BILLABLE CODE |
| S20.361A | Insect bite (nonvenomous) of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.361D | Insect bite (nonvenomous) of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.361S | Insect bite (nonvenomous) of right front wall of thorax, sequela | BILLABLE CODE |
| S20.362 | Insect bite (nonvenomous) of left front wall of thorax | NON-BILLABLE CODE |
| S20.362A | Insect bite (nonvenomous) of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.362D | Insect bite (nonvenomous) of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.362S | Insect bite (nonvenomous) of left front wall of thorax, sequela | BILLABLE CODE |
| S20.363 | Insect bite (nonvenomous) of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.363A | Insect bite (nonvenomous) of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.363D | Insect bite (nonvenomous) of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.363S | Insect bite (nonvenomous) of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.364 | Insect bite (nonvenomous) of middle front wall of thorax | NON-BILLABLE CODE |
| S20.364A | Insect bite (nonvenomous) of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.364D | Insect bite (nonvenomous) of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.364S | Insect bite (nonvenomous) of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.369 | Insect bite (nonvenomous) of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.369A | Insect bite (nonvenomous) of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.369D | Insect bite (nonvenomous) of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.369S | Insect bite (nonvenomous) of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.37 | Other superficial bite of front wall of thorax | NON-BILLABLE CODE |
| S20.371 | Other superficial bite of right front wall of thorax | NON-BILLABLE CODE |
| S20.371A | Other superficial bite of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.371D | Other superficial bite of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.371S | Other superficial bite of right front wall of thorax, sequela | BILLABLE CODE |
| S20.372 | Other superficial bite of left front wall of thorax | NON-BILLABLE CODE |
| S20.372A | Other superficial bite of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.372D | Other superficial bite of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.372S | Other superficial bite of left front wall of thorax, sequela | BILLABLE CODE |
| S20.373 | Other superficial bite of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.373A | Other superficial bite of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.373D | Other superficial bite of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.373S | Other superficial bite of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.374 | Other superficial bite of middle front wall of thorax | NON-BILLABLE CODE |
| S20.374A | Other superficial bite of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.374D | Other superficial bite of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.374S | Other superficial bite of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.379 | Other superficial bite of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.379A | Other superficial bite of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.379D | Other superficial bite of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.379S | Other superficial bite of unspecified front wall of thorax, sequela | BILLABLE CODE |
| S20.4 | Other and unspecified superficial injuries of back wall of thorax | NON-BILLABLE CODE |
| S20.40 | Unspecified superficial injuries of back wall of thorax | NON-BILLABLE CODE |
| S20.401 | Unspecified superficial injuries of right back wall of thorax | NON-BILLABLE CODE |
| S20.401A | Unspecified superficial injuries of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.401D | Unspecified superficial injuries of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.401S | Unspecified superficial injuries of right back wall of thorax, sequela | BILLABLE CODE |
| S20.402 | Unspecified superficial injuries of left back wall of thorax | NON-BILLABLE CODE |
| S20.402A | Unspecified superficial injuries of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.402D | Unspecified superficial injuries of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.402S | Unspecified superficial injuries of left back wall of thorax, sequela | BILLABLE CODE |
| S20.409 | Unspecified superficial injuries of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.409A | Unspecified superficial injuries of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.409D | Unspecified superficial injuries of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.409S | Unspecified superficial injuries of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.41 | Abrasion of back wall of thorax | NON-BILLABLE CODE |
| S20.411 | Abrasion of right back wall of thorax | NON-BILLABLE CODE |
| S20.411A | Abrasion of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.411D | Abrasion of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.411S | Abrasion of right back wall of thorax, sequela | BILLABLE CODE |
| S20.412 | Abrasion of left back wall of thorax | NON-BILLABLE CODE |
| S20.412A | Abrasion of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.412D | Abrasion of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.412S | Abrasion of left back wall of thorax, sequela | BILLABLE CODE |
| S20.419 | Abrasion of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.419A | Abrasion of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.419D | Abrasion of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.419S | Abrasion of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.42 | Blister (nonthermal) of back wall of thorax | NON-BILLABLE CODE |
| S20.421 | Blister (nonthermal) of right back wall of thorax | NON-BILLABLE CODE |
| S20.421A | Blister (nonthermal) of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.421D | Blister (nonthermal) of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.421S | Blister (nonthermal) of right back wall of thorax, sequela | BILLABLE CODE |
| S20.422 | Blister (nonthermal) of left back wall of thorax | NON-BILLABLE CODE |
| S20.422A | Blister (nonthermal) of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.422D | Blister (nonthermal) of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.422S | Blister (nonthermal) of left back wall of thorax, sequela | BILLABLE CODE |
| S20.429 | Blister (nonthermal) of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.429A | Blister (nonthermal) of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.429D | Blister (nonthermal) of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.429S | Blister (nonthermal) of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.44 | External constriction of back wall of thorax | NON-BILLABLE CODE |
| S20.441 | External constriction of right back wall of thorax | NON-BILLABLE CODE |
| S20.441A | External constriction of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.441D | External constriction of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.441S | External constriction of right back wall of thorax, sequela | BILLABLE CODE |
| S20.442 | External constriction of left back wall of thorax | NON-BILLABLE CODE |
| S20.442A | External constriction of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.442D | External constriction of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.442S | External constriction of left back wall of thorax, sequela | BILLABLE CODE |
| S20.449 | External constriction of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.449A | External constriction of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.449D | External constriction of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.449S | External constriction of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.45 | Superficial foreign body of back wall of thorax | NON-BILLABLE CODE |
| S20.451 | Superficial foreign body of right back wall of thorax | NON-BILLABLE CODE |
| S20.451A | Superficial foreign body of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.451D | Superficial foreign body of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.451S | Superficial foreign body of right back wall of thorax, sequela | BILLABLE CODE |
| S20.452 | Superficial foreign body of left back wall of thorax | NON-BILLABLE CODE |
| S20.452A | Superficial foreign body of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.452D | Superficial foreign body of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.452S | Superficial foreign body of left back wall of thorax, sequela | BILLABLE CODE |
| S20.459 | Superficial foreign body of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.459A | Superficial foreign body of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.459D | Superficial foreign body of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.459S | Superficial foreign body of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.46 | Insect bite (nonvenomous) of back wall of thorax | NON-BILLABLE CODE |
| S20.461 | Insect bite (nonvenomous) of right back wall of thorax | NON-BILLABLE CODE |
| S20.461A | Insect bite (nonvenomous) of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.461D | Insect bite (nonvenomous) of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.461S | Insect bite (nonvenomous) of right back wall of thorax, sequela | BILLABLE CODE |
| S20.462 | Insect bite (nonvenomous) of left back wall of thorax | NON-BILLABLE CODE |
| S20.462A | Insect bite (nonvenomous) of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.462D | Insect bite (nonvenomous) of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.462S | Insect bite (nonvenomous) of left back wall of thorax, sequela | BILLABLE CODE |
| S20.469 | Insect bite (nonvenomous) of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.469A | Insect bite (nonvenomous) of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.469D | Insect bite (nonvenomous) of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.469S | Insect bite (nonvenomous) of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.47 | Other superficial bite of back wall of thorax | NON-BILLABLE CODE |
| S20.471 | Other superficial bite of right back wall of thorax | NON-BILLABLE CODE |
| S20.471A | Other superficial bite of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.471D | Other superficial bite of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.471S | Other superficial bite of right back wall of thorax, sequela | BILLABLE CODE |
| S20.472 | Other superficial bite of left back wall of thorax | NON-BILLABLE CODE |
| S20.472A | Other superficial bite of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.472D | Other superficial bite of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.472S | Other superficial bite of left back wall of thorax, sequela | BILLABLE CODE |
| S20.479 | Other superficial bite of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.479A | Other superficial bite of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.479D | Other superficial bite of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.479S | Other superficial bite of unspecified back wall of thorax, sequela | BILLABLE CODE |
| S20.9 | Superficial injury of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.90 | Unspecified superficial injury of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.90XA | Unspecified superficial injury of unspecified parts of thorax, initial encounter | BILLABLE CODE |
| S20.90XD | Unspecified superficial injury of unspecified parts of thorax, subsequent encounter | BILLABLE CODE |
| S20.90XS | Unspecified superficial injury of unspecified parts of thorax, sequela | BILLABLE CODE |
| S20.91 | Abrasion of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.91XA | Abrasion of unspecified parts of thorax, initial encounter | BILLABLE CODE |
| S20.91XD | Abrasion of unspecified parts of thorax, subsequent encounter | BILLABLE CODE |
| S20.91XS | Abrasion of unspecified parts of thorax, sequela | BILLABLE CODE |
| S20.92 | Blister (nonthermal) of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.92XA | Blister (nonthermal) of unspecified parts of thorax, initial encounter | BILLABLE CODE |
| S20.92XD | Blister (nonthermal) of unspecified parts of thorax, subsequent encounter | BILLABLE CODE |
| S20.92XS | Blister (nonthermal) of unspecified parts of thorax, sequela | BILLABLE CODE |
| S20.94 | External constriction of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.94XA | External constriction of unspecified parts of thorax, initial encounter | BILLABLE CODE |
| S20.94XD | External constriction of unspecified parts of thorax, subsequent encounter | BILLABLE CODE |
| S20.94XS | External constriction of unspecified parts of thorax, sequela | BILLABLE CODE |
| S20.95 | Superficial foreign body of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.95XA | Superficial foreign body of unspecified parts of thorax, initial encounter | BILLABLE CODE |
| S20.95XD | Superficial foreign body of unspecified parts of thorax, subsequent encounter | BILLABLE CODE |
| S20.95XS | Superficial foreign body of unspecified parts of thorax, sequela | BILLABLE CODE |
| S20.96 | Insect bite (nonvenomous) of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.96XA | Insect bite (nonvenomous) of unspecified parts of thorax, initial encounter | BILLABLE CODE |
| S20.96XD | Insect bite (nonvenomous) of unspecified parts of thorax, subsequent encounter | BILLABLE CODE |
| S20.96XS | Insect bite (nonvenomous) of unspecified parts of thorax, sequela | BILLABLE CODE |
| S20.97 | Other superficial bite of unspecified parts of thorax | NON-BILLABLE CODE |
| S20.97XA | Other superficial bite of unspecified parts of thorax, initial encounter | BILLABLE CODE |
| S20.97XD | Other superficial bite of unspecified parts of thorax, subsequent encounter | BILLABLE CODE |
| S20.97XS | Other superficial bite of unspecified parts of thorax, sequela | BILLABLE CODE |
