ICD-10-CM Tabular Index · Chapter 19 · FY 2026 T20

Burn and corrosion of head, face, and neck (T20) ICD-10-CM

The T20 code range covers burn and corrosion of head, face, and neck with 369 ICD-10-CM diagnosis codes. 264 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
369
Diagnosis Codes
264
Billable Codes
T20
Code Range
T20–T25
Parent Section

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

ICD-10-CM

Codes in the T20 Range 369 codes · 264 billable

369 of 369 shown
  • T20 Burn and corrosion of head, face, and neckNon-billable
  • T20.0 Burn of unspecified degree of head, face, and neckNon-billable
  • T20.00 Burn of unspecified degree of head, face, and neck, unspecified siteNon-billable
  • T20.00XA Burn of unspecified degree of head, face, and neck, unspecified site, initial encounter
  • T20.00XD Burn of unspecified degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.00XS Burn of unspecified degree of head, face, and neck, unspecified site, sequela
  • T20.01 Burn of unspecified degree of ear [any part, except ear drum]Non-billable
  • T20.011 Burn of unspecified degree of right ear [any part, except ear drum]Non-billable
  • T20.011A Burn of unspecified degree of right ear [any part, except ear drum], initial encounter
  • T20.011D Burn of unspecified degree of right ear [any part, except ear drum], subsequent encounter
  • T20.011S Burn of unspecified degree of right ear [any part, except ear drum], sequela
  • T20.012 Burn of unspecified degree of left ear [any part, except ear drum]Non-billable
  • T20.012A Burn of unspecified degree of left ear [any part, except ear drum], initial encounter
  • T20.012D Burn of unspecified degree of left ear [any part, except ear drum], subsequent encounter
  • T20.012S Burn of unspecified degree of left ear [any part, except ear drum], sequela
  • T20.019 Burn of unspecified degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.019A Burn of unspecified degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.019D Burn of unspecified degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.019S Burn of unspecified degree of unspecified ear [any part, except ear drum], sequela
  • T20.02 Burn of unspecified degree of lip(s)Non-billable
  • T20.02XA Burn of unspecified degree of lip(s), initial encounter
  • T20.02XD Burn of unspecified degree of lip(s), subsequent encounter
  • T20.02XS Burn of unspecified degree of lip(s), sequela
  • T20.03 Burn of unspecified degree of chinNon-billable
  • T20.03XA Burn of unspecified degree of chin, initial encounter
  • T20.03XD Burn of unspecified degree of chin, subsequent encounter
  • T20.03XS Burn of unspecified degree of chin, sequela
  • T20.04 Burn of unspecified degree of nose (septum)Non-billable
  • T20.04XA Burn of unspecified degree of nose (septum), initial encounter
  • T20.04XD Burn of unspecified degree of nose (septum), subsequent encounter
  • T20.04XS Burn of unspecified degree of nose (septum), sequela
  • T20.05 Burn of unspecified degree of scalp [any part]Non-billable
  • T20.05XA Burn of unspecified degree of scalp [any part], initial encounter
  • T20.05XD Burn of unspecified degree of scalp [any part], subsequent encounter
  • T20.05XS Burn of unspecified degree of scalp [any part], sequela
  • T20.06 Burn of unspecified degree of forehead and cheekNon-billable
  • T20.06XA Burn of unspecified degree of forehead and cheek, initial encounter
  • T20.06XD Burn of unspecified degree of forehead and cheek, subsequent encounter
  • T20.06XS Burn of unspecified degree of forehead and cheek, sequela
  • T20.07 Burn of unspecified degree of neckNon-billable
  • T20.07XA Burn of unspecified degree of neck, initial encounter
  • T20.07XD Burn of unspecified degree of neck, subsequent encounter
  • T20.07XS Burn of unspecified degree of neck, sequela
  • T20.09 Burn of unspecified degree of multiple sites of head, face, and neckNon-billable
  • T20.09XA Burn of unspecified degree of multiple sites of head, face, and neck, initial encounter
  • T20.09XD Burn of unspecified degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.09XS Burn of unspecified degree of multiple sites of head, face, and neck, sequela
  • T20.1 Burn of first degree of head, face, and neckNon-billable
  • T20.10 Burn of first degree of head, face, and neck, unspecified siteNon-billable
  • T20.10XA Burn of first degree of head, face, and neck, unspecified site, initial encounter
  • T20.10XD Burn of first degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.10XS Burn of first degree of head, face, and neck, unspecified site, sequela
  • T20.11 Burn of first degree of ear [any part, except ear drum]Non-billable
  • T20.111 Burn of first degree of right ear [any part, except ear drum]Non-billable
  • T20.111A Burn of first degree of right ear [any part, except ear drum], initial encounter
  • T20.111D Burn of first degree of right ear [any part, except ear drum], subsequent encounter
  • T20.111S Burn of first degree of right ear [any part, except ear drum], sequela
  • T20.112 Burn of first degree of left ear [any part, except ear drum]Non-billable
  • T20.112A Burn of first degree of left ear [any part, except ear drum], initial encounter
  • T20.112D Burn of first degree of left ear [any part, except ear drum], subsequent encounter
  • T20.112S Burn of first degree of left ear [any part, except ear drum], sequela
  • T20.119 Burn of first degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.119A Burn of first degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.119D Burn of first degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.119S Burn of first degree of unspecified ear [any part, except ear drum], sequela
  • T20.12 Burn of first degree of lip(s)Non-billable
  • T20.12XA Burn of first degree of lip(s), initial encounter
  • T20.12XD Burn of first degree of lip(s), subsequent encounter
  • T20.12XS Burn of first degree of lip(s), sequela
  • T20.13 Burn of first degree of chinNon-billable
  • T20.13XA Burn of first degree of chin, initial encounter
  • T20.13XD Burn of first degree of chin, subsequent encounter
  • T20.13XS Burn of first degree of chin, sequela
  • T20.14 Burn of first degree of nose (septum)Non-billable
  • T20.14XA Burn of first degree of nose (septum), initial encounter
  • T20.14XD Burn of first degree of nose (septum), subsequent encounter
  • T20.14XS Burn of first degree of nose (septum), sequela
  • T20.15 Burn of first degree of scalp [any part]Non-billable
  • T20.15XA Burn of first degree of scalp [any part], initial encounter
  • T20.15XD Burn of first degree of scalp [any part], subsequent encounter
  • T20.15XS Burn of first degree of scalp [any part], sequela
  • T20.16 Burn of first degree of forehead and cheekNon-billable
  • T20.16XA Burn of first degree of forehead and cheek, initial encounter
  • T20.16XD Burn of first degree of forehead and cheek, subsequent encounter
  • T20.16XS Burn of first degree of forehead and cheek, sequela
  • T20.17 Burn of first degree of neckNon-billable
  • T20.17XA Burn of first degree of neck, initial encounter
  • T20.17XD Burn of first degree of neck, subsequent encounter
  • T20.17XS Burn of first degree of neck, sequela
  • T20.19 Burn of first degree of multiple sites of head, face, and neckNon-billable
  • T20.19XA Burn of first degree of multiple sites of head, face, and neck, initial encounter
  • T20.19XD Burn of first degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.19XS Burn of first degree of multiple sites of head, face, and neck, sequela
  • T20.2 Burn of second degree of head, face, and neckNon-billable
  • T20.20 Burn of second degree of head, face, and neck, unspecified siteNon-billable
  • T20.20XA Burn of second degree of head, face, and neck, unspecified site, initial encounter
  • T20.20XD Burn of second degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.20XS Burn of second degree of head, face, and neck, unspecified site, sequela
  • T20.21 Burn of second degree of ear [any part, except ear drum]Non-billable
  • T20.211 Burn of second degree of right ear [any part, except ear drum]Non-billable
  • T20.211A Burn of second degree of right ear [any part, except ear drum], initial encounter
  • T20.211D Burn of second degree of right ear [any part, except ear drum], subsequent encounter
  • T20.211S Burn of second degree of right ear [any part, except ear drum], sequela
  • T20.212 Burn of second degree of left ear [any part, except ear drum]Non-billable
  • T20.212A Burn of second degree of left ear [any part, except ear drum], initial encounter
  • T20.212D Burn of second degree of left ear [any part, except ear drum], subsequent encounter
  • T20.212S Burn of second degree of left ear [any part, except ear drum], sequela
  • T20.219 Burn of second degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.219A Burn of second degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.219D Burn of second degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.219S Burn of second degree of unspecified ear [any part, except ear drum], sequela
  • T20.22 Burn of second degree of lip(s)Non-billable
  • T20.22XA Burn of second degree of lip(s), initial encounter
  • T20.22XD Burn of second degree of lip(s), subsequent encounter
  • T20.22XS Burn of second degree of lip(s), sequela
  • T20.23 Burn of second degree of chinNon-billable
  • T20.23XA Burn of second degree of chin, initial encounter
  • T20.23XD Burn of second degree of chin, subsequent encounter
  • T20.23XS Burn of second degree of chin, sequela
  • T20.24 Burn of second degree of nose (septum)Non-billable
  • T20.24XA Burn of second degree of nose (septum), initial encounter
  • T20.24XD Burn of second degree of nose (septum), subsequent encounter
  • T20.24XS Burn of second degree of nose (septum), sequela
  • T20.25 Burn of second degree of scalp [any part]Non-billable
  • T20.25XA Burn of second degree of scalp [any part], initial encounter
  • T20.25XD Burn of second degree of scalp [any part], subsequent encounter
  • T20.25XS Burn of second degree of scalp [any part], sequela
  • T20.26 Burn of second degree of forehead and cheekNon-billable
  • T20.26XA Burn of second degree of forehead and cheek, initial encounter
  • T20.26XD Burn of second degree of forehead and cheek, subsequent encounter
  • T20.26XS Burn of second degree of forehead and cheek, sequela
  • T20.27 Burn of second degree of neckNon-billable
  • T20.27XA Burn of second degree of neck, initial encounter
  • T20.27XD Burn of second degree of neck, subsequent encounter
  • T20.27XS Burn of second degree of neck, sequela
  • T20.29 Burn of second degree of multiple sites of head, face, and neckNon-billable
  • T20.29XA Burn of second degree of multiple sites of head, face, and neck, initial encounter
  • T20.29XD Burn of second degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.29XS Burn of second degree of multiple sites of head, face, and neck, sequela
  • T20.3 Burn of third degree of head, face, and neckNon-billable
  • T20.30 Burn of third degree of head, face, and neck, unspecified siteNon-billable
  • T20.30XA Burn of third degree of head, face, and neck, unspecified site, initial encounter
  • T20.30XD Burn of third degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.30XS Burn of third degree of head, face, and neck, unspecified site, sequela
  • T20.31 Burn of third degree of ear [any part, except ear drum]Non-billable
  • T20.311 Burn of third degree of right ear [any part, except ear drum]Non-billable
  • T20.311A Burn of third degree of right ear [any part, except ear drum], initial encounter
  • T20.311D Burn of third degree of right ear [any part, except ear drum], subsequent encounter
  • T20.311S Burn of third degree of right ear [any part, except ear drum], sequela
  • T20.312 Burn of third degree of left ear [any part, except ear drum]Non-billable
  • T20.312A Burn of third degree of left ear [any part, except ear drum], initial encounter
  • T20.312D Burn of third degree of left ear [any part, except ear drum], subsequent encounter
  • T20.312S Burn of third degree of left ear [any part, except ear drum], sequela
  • T20.319 Burn of third degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.319A Burn of third degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.319D Burn of third degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.319S Burn of third degree of unspecified ear [any part, except ear drum], sequela
  • T20.32 Burn of third degree of lip(s)Non-billable
  • T20.32XA Burn of third degree of lip(s), initial encounter
  • T20.32XD Burn of third degree of lip(s), subsequent encounter
  • T20.32XS Burn of third degree of lip(s), sequela
  • T20.33 Burn of third degree of chinNon-billable
  • T20.33XA Burn of third degree of chin, initial encounter
  • T20.33XD Burn of third degree of chin, subsequent encounter
  • T20.33XS Burn of third degree of chin, sequela
  • T20.34 Burn of third degree of nose (septum)Non-billable
  • T20.34XA Burn of third degree of nose (septum), initial encounter
  • T20.34XD Burn of third degree of nose (septum), subsequent encounter
  • T20.34XS Burn of third degree of nose (septum), sequela
  • T20.35 Burn of third degree of scalp [any part]Non-billable
  • T20.35XA Burn of third degree of scalp [any part], initial encounter
  • T20.35XD Burn of third degree of scalp [any part], subsequent encounter
  • T20.35XS Burn of third degree of scalp [any part], sequela
  • T20.36 Burn of third degree of forehead and cheekNon-billable
  • T20.36XA Burn of third degree of forehead and cheek, initial encounter
  • T20.36XD Burn of third degree of forehead and cheek, subsequent encounter
  • T20.36XS Burn of third degree of forehead and cheek, sequela
  • T20.37 Burn of third degree of neckNon-billable
  • T20.37XA Burn of third degree of neck, initial encounter
  • T20.37XD Burn of third degree of neck, subsequent encounter
  • T20.37XS Burn of third degree of neck, sequela
  • T20.39 Burn of third degree of multiple sites of head, face, and neckNon-billable
  • T20.39XA Burn of third degree of multiple sites of head, face, and neck, initial encounter
  • T20.39XD Burn of third degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.39XS Burn of third degree of multiple sites of head, face, and neck, sequela
  • T20.4 Corrosion of unspecified degree of head, face, and neckNon-billable
  • T20.40 Corrosion of unspecified degree of head, face, and neck, unspecified siteNon-billable
  • T20.40XA Corrosion of unspecified degree of head, face, and neck, unspecified site, initial encounter
  • T20.40XD Corrosion of unspecified degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.40XS Corrosion of unspecified degree of head, face, and neck, unspecified site, sequela
  • T20.41 Corrosion of unspecified degree of ear [any part, except ear drum]Non-billable
  • T20.411 Corrosion of unspecified degree of right ear [any part, except ear drum]Non-billable
  • T20.411A Corrosion of unspecified degree of right ear [any part, except ear drum], initial encounter
  • T20.411D Corrosion of unspecified degree of right ear [any part, except ear drum], subsequent encounter
  • T20.411S Corrosion of unspecified degree of right ear [any part, except ear drum], sequela
  • T20.412 Corrosion of unspecified degree of left ear [any part, except ear drum]Non-billable
  • T20.412A Corrosion of unspecified degree of left ear [any part, except ear drum], initial encounter
  • T20.412D Corrosion of unspecified degree of left ear [any part, except ear drum], subsequent encounter
  • T20.412S Corrosion of unspecified degree of left ear [any part, except ear drum], sequela
  • T20.419 Corrosion of unspecified degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.419A Corrosion of unspecified degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.419D Corrosion of unspecified degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.419S Corrosion of unspecified degree of unspecified ear [any part, except ear drum], sequela
  • T20.42 Corrosion of unspecified degree of lip(s)Non-billable
  • T20.42XA Corrosion of unspecified degree of lip(s), initial encounter
  • T20.42XD Corrosion of unspecified degree of lip(s), subsequent encounter
  • T20.42XS Corrosion of unspecified degree of lip(s), sequela
  • T20.43 Corrosion of unspecified degree of chinNon-billable
  • T20.43XA Corrosion of unspecified degree of chin, initial encounter
  • T20.43XD Corrosion of unspecified degree of chin, subsequent encounter
  • T20.43XS Corrosion of unspecified degree of chin, sequela
  • T20.44 Corrosion of unspecified degree of nose (septum)Non-billable
  • T20.44XA Corrosion of unspecified degree of nose (septum), initial encounter
  • T20.44XD Corrosion of unspecified degree of nose (septum), subsequent encounter
  • T20.44XS Corrosion of unspecified degree of nose (septum), sequela
  • T20.45 Corrosion of unspecified degree of scalp [any part]Non-billable
  • T20.45XA Corrosion of unspecified degree of scalp [any part], initial encounter
  • T20.45XD Corrosion of unspecified degree of scalp [any part], subsequent encounter
  • T20.45XS Corrosion of unspecified degree of scalp [any part], sequela
  • T20.46 Corrosion of unspecified degree of forehead and cheekNon-billable
  • T20.46XA Corrosion of unspecified degree of forehead and cheek, initial encounter
  • T20.46XD Corrosion of unspecified degree of forehead and cheek, subsequent encounter
  • T20.46XS Corrosion of unspecified degree of forehead and cheek, sequela
  • T20.47 Corrosion of unspecified degree of neckNon-billable
  • T20.47XA Corrosion of unspecified degree of neck, initial encounter
  • T20.47XD Corrosion of unspecified degree of neck, subsequent encounter
  • T20.47XS Corrosion of unspecified degree of neck, sequela
  • T20.49 Corrosion of unspecified degree of multiple sites of head, face, and neckNon-billable
  • T20.49XA Corrosion of unspecified degree of multiple sites of head, face, and neck, initial encounter
  • T20.49XD Corrosion of unspecified degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.49XS Corrosion of unspecified degree of multiple sites of head, face, and neck, sequela
  • T20.5 Corrosion of first degree of head, face, and neckNon-billable
  • T20.50 Corrosion of first degree of head, face, and neck, unspecified siteNon-billable
  • T20.50XA Corrosion of first degree of head, face, and neck, unspecified site, initial encounter
  • T20.50XD Corrosion of first degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.50XS Corrosion of first degree of head, face, and neck, unspecified site, sequela
  • T20.51 Corrosion of first degree of ear [any part, except ear drum]Non-billable
  • T20.511 Corrosion of first degree of right ear [any part, except ear drum]Non-billable
  • T20.511A Corrosion of first degree of right ear [any part, except ear drum], initial encounter
  • T20.511D Corrosion of first degree of right ear [any part, except ear drum], subsequent encounter
  • T20.511S Corrosion of first degree of right ear [any part, except ear drum], sequela
  • T20.512 Corrosion of first degree of left ear [any part, except ear drum]Non-billable
  • T20.512A Corrosion of first degree of left ear [any part, except ear drum], initial encounter
  • T20.512D Corrosion of first degree of left ear [any part, except ear drum], subsequent encounter
  • T20.512S Corrosion of first degree of left ear [any part, except ear drum], sequela
  • T20.519 Corrosion of first degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.519A Corrosion of first degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.519D Corrosion of first degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.519S Corrosion of first degree of unspecified ear [any part, except ear drum], sequela
  • T20.52 Corrosion of first degree of lip(s)Non-billable
  • T20.52XA Corrosion of first degree of lip(s), initial encounter
  • T20.52XD Corrosion of first degree of lip(s), subsequent encounter
  • T20.52XS Corrosion of first degree of lip(s), sequela
  • T20.53 Corrosion of first degree of chinNon-billable
  • T20.53XA Corrosion of first degree of chin, initial encounter
  • T20.53XD Corrosion of first degree of chin, subsequent encounter
  • T20.53XS Corrosion of first degree of chin, sequela
  • T20.54 Corrosion of first degree of nose (septum)Non-billable
  • T20.54XA Corrosion of first degree of nose (septum), initial encounter
  • T20.54XD Corrosion of first degree of nose (septum), subsequent encounter
  • T20.54XS Corrosion of first degree of nose (septum), sequela
  • T20.55 Corrosion of first degree of scalp [any part]Non-billable
  • T20.55XA Corrosion of first degree of scalp [any part], initial encounter
  • T20.55XD Corrosion of first degree of scalp [any part], subsequent encounter
  • T20.55XS Corrosion of first degree of scalp [any part], sequela
  • T20.56 Corrosion of first degree of forehead and cheekNon-billable
  • T20.56XA Corrosion of first degree of forehead and cheek, initial encounter
  • T20.56XD Corrosion of first degree of forehead and cheek, subsequent encounter
  • T20.56XS Corrosion of first degree of forehead and cheek, sequela
  • T20.57 Corrosion of first degree of neckNon-billable
  • T20.57XA Corrosion of first degree of neck, initial encounter
  • T20.57XD Corrosion of first degree of neck, subsequent encounter
  • T20.57XS Corrosion of first degree of neck, sequela
  • T20.59 Corrosion of first degree of multiple sites of head, face, and neckNon-billable
  • T20.59XA Corrosion of first degree of multiple sites of head, face, and neck, initial encounter
  • T20.59XD Corrosion of first degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.59XS Corrosion of first degree of multiple sites of head, face, and neck, sequela
  • T20.6 Corrosion of second degree of head, face, and neckNon-billable
  • T20.60 Corrosion of second degree of head, face, and neck, unspecified siteNon-billable
  • T20.60XA Corrosion of second degree of head, face, and neck, unspecified site, initial encounter
  • T20.60XD Corrosion of second degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.60XS Corrosion of second degree of head, face, and neck, unspecified site, sequela
  • T20.61 Corrosion of second degree of ear [any part, except ear drum]Non-billable
  • T20.611 Corrosion of second degree of right ear [any part, except ear drum]Non-billable
  • T20.611A Corrosion of second degree of right ear [any part, except ear drum], initial encounter
  • T20.611D Corrosion of second degree of right ear [any part, except ear drum], subsequent encounter
  • T20.611S Corrosion of second degree of right ear [any part, except ear drum], sequela
  • T20.612 Corrosion of second degree of left ear [any part, except ear drum]Non-billable
  • T20.612A Corrosion of second degree of left ear [any part, except ear drum], initial encounter
  • T20.612D Corrosion of second degree of left ear [any part, except ear drum], subsequent encounter
  • T20.612S Corrosion of second degree of left ear [any part, except ear drum], sequela
  • T20.619 Corrosion of second degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.619A Corrosion of second degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.619D Corrosion of second degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.619S Corrosion of second degree of unspecified ear [any part, except ear drum], sequela
  • T20.62 Corrosion of second degree of lip(s)Non-billable
  • T20.62XA Corrosion of second degree of lip(s), initial encounter
  • T20.62XD Corrosion of second degree of lip(s), subsequent encounter
  • T20.62XS Corrosion of second degree of lip(s), sequela
  • T20.63 Corrosion of second degree of chinNon-billable
  • T20.63XA Corrosion of second degree of chin, initial encounter
  • T20.63XD Corrosion of second degree of chin, subsequent encounter
  • T20.63XS Corrosion of second degree of chin, sequela
  • T20.64 Corrosion of second degree of nose (septum)Non-billable
  • T20.64XA Corrosion of second degree of nose (septum), initial encounter
  • T20.64XD Corrosion of second degree of nose (septum), subsequent encounter
  • T20.64XS Corrosion of second degree of nose (septum), sequela
  • T20.65 Corrosion of second degree of scalp [any part]Non-billable
  • T20.65XA Corrosion of second degree of scalp [any part], initial encounter
  • T20.65XD Corrosion of second degree of scalp [any part], subsequent encounter
  • T20.65XS Corrosion of second degree of scalp [any part], sequela
  • T20.66 Corrosion of second degree of forehead and cheekNon-billable
  • T20.66XA Corrosion of second degree of forehead and cheek, initial encounter
  • T20.66XD Corrosion of second degree of forehead and cheek, subsequent encounter
  • T20.66XS Corrosion of second degree of forehead and cheek, sequela
  • T20.67 Corrosion of second degree of neckNon-billable
  • T20.67XA Corrosion of second degree of neck, initial encounter
  • T20.67XD Corrosion of second degree of neck, subsequent encounter
  • T20.67XS Corrosion of second degree of neck, sequela
  • T20.69 Corrosion of second degree of multiple sites of head, face, and neckNon-billable
  • T20.69XA Corrosion of second degree of multiple sites of head, face, and neck, initial encounter
  • T20.69XD Corrosion of second degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.69XS Corrosion of second degree of multiple sites of head, face, and neck, sequela
  • T20.7 Corrosion of third degree of head, face, and neckNon-billable
  • T20.70 Corrosion of third degree of head, face, and neck, unspecified siteNon-billable
  • T20.70XA Corrosion of third degree of head, face, and neck, unspecified site, initial encounter
  • T20.70XD Corrosion of third degree of head, face, and neck, unspecified site, subsequent encounter
  • T20.70XS Corrosion of third degree of head, face, and neck, unspecified site, sequela
  • T20.71 Corrosion of third degree of ear [any part, except ear drum]Non-billable
  • T20.711 Corrosion of third degree of right ear [any part, except ear drum]Non-billable
  • T20.711A Corrosion of third degree of right ear [any part, except ear drum], initial encounter
  • T20.711D Corrosion of third degree of right ear [any part, except ear drum], subsequent encounter
  • T20.711S Corrosion of third degree of right ear [any part, except ear drum], sequela
  • T20.712 Corrosion of third degree of left ear [any part, except ear drum]Non-billable
  • T20.712A Corrosion of third degree of left ear [any part, except ear drum], initial encounter
  • T20.712D Corrosion of third degree of left ear [any part, except ear drum], subsequent encounter
  • T20.712S Corrosion of third degree of left ear [any part, except ear drum], sequela
  • T20.719 Corrosion of third degree of unspecified ear [any part, except ear drum]Non-billable
  • T20.719A Corrosion of third degree of unspecified ear [any part, except ear drum], initial encounter
  • T20.719D Corrosion of third degree of unspecified ear [any part, except ear drum], subsequent encounter
  • T20.719S Corrosion of third degree of unspecified ear [any part, except ear drum], sequela
  • T20.72 Corrosion of third degree of lip(s)Non-billable
  • T20.72XA Corrosion of third degree of lip(s), initial encounter
  • T20.72XD Corrosion of third degree of lip(s), subsequent encounter
  • T20.72XS Corrosion of third degree of lip(s), sequela
  • T20.73 Corrosion of third degree of chinNon-billable
  • T20.73XA Corrosion of third degree of chin, initial encounter
  • T20.73XD Corrosion of third degree of chin, subsequent encounter
  • T20.73XS Corrosion of third degree of chin, sequela
  • T20.74 Corrosion of third degree of nose (septum)Non-billable
  • T20.74XA Corrosion of third degree of nose (septum), initial encounter
  • T20.74XD Corrosion of third degree of nose (septum), subsequent encounter
  • T20.74XS Corrosion of third degree of nose (septum), sequela
  • T20.75 Corrosion of third degree of scalp [any part]Non-billable
  • T20.75XA Corrosion of third degree of scalp [any part], initial encounter
  • T20.75XD Corrosion of third degree of scalp [any part], subsequent encounter
  • T20.75XS Corrosion of third degree of scalp [any part], sequela
  • T20.76 Corrosion of third degree of forehead and cheekNon-billable
  • T20.76XA Corrosion of third degree of forehead and cheek, initial encounter
  • T20.76XD Corrosion of third degree of forehead and cheek, subsequent encounter
  • T20.76XS Corrosion of third degree of forehead and cheek, sequela
  • T20.77 Corrosion of third degree of neckNon-billable
  • T20.77XA Corrosion of third degree of neck, initial encounter
  • T20.77XD Corrosion of third degree of neck, subsequent encounter
  • T20.77XS Corrosion of third degree of neck, sequela
  • T20.79 Corrosion of third degree of multiple sites of head, face, and neckNon-billable
  • T20.79XA Corrosion of third degree of multiple sites of head, face, and neck, initial encounter
  • T20.79XD Corrosion of third degree of multiple sites of head, face, and neck, subsequent encounter
  • T20.79XS Corrosion of third degree of multiple sites of head, face, and neck, sequela

About the T20 Code Range

This section covers ICD-10 codes related to burns and corrosions affecting the head, face, and neck area, classified under T20. These codes specify the severity (unspecified, first, second, or third degree) and detailed anatomical locations like ears, lips, chin, nose (septum), scalp, forehead and cheek, neck, or multiple sites.

The ICD-10 code for burn and corrosion of head, face, and neck includes a range of subcodes that distinguish burns by degree and precise site. For instance, T20.00XA indicates an initial encounter for an unspecified degree burn to an unspecified site, encompassing conditions synonymously described as burns of the face, head, or neck, including abrasion or friction burns. Coders can find specific codes for detailed areas such as the right ear (e.g., T20.011A), lip (e.g., T20.02XA), or scalp (e.g., T20.05XA), with variations for initial, subsequent, or sequela encounters.

Corrosions, which are chemical injuries, are also coded here, with parallel specificity in degree and location (e.g., T20.40XA for corrosion of unspecified degree and site). The inclusion of synonyms like “chemical burn of face” or “superficial corrosion of ear” helps clarify coding choices for healthcare providers and coders seeking the correct ICD-10 code for burns and corrosions of head, face, and neck.

Questions About This Page

How many billable codes are in the T20 range?

Of the 369 codes in this range, 264 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the T20 range classify?

The range classifies burn and corrosion of head, face, and neck. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM ChaptersAll of Chapter 19ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.