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  3. S00–T88
  4. T20-T25
  5. Burn and corrosion of ankle and foot (T25)

Burn and corrosion of ankle and foot (T25)

ICD-10 codes in the T25 category cover burns and corrosions specifically affecting the ankle and foot. These codes detail the degree of burn or corrosion, the exact location (right, left, or unspecified ankle, foot, toes), and the stage of treatment, whether initial, subsequent, or sequela.

This section provides codes for various burn depths, including first degree (epidermal burns), second degree (partial thickness burns), and third degree (full thickness burns). It also differentiates between burns and corrosions, which often refer to chemical burns, clarifying terms like epidermal burn of foot, partial thickness burn of ankle, and chemical burn of foot. Each code can specify the affected side (right or left) and the body site, such as toes or multiple sites on the ankle and foot. These distinctions assist medical coders in accurately capturing the severity and precise location of injury for clinical documentation and billing. The ICD-10 code for burn of right ankle (e.g., T25.011A) or corrosion of left foot (e.g., T25.422A) helps identify specific cases in practice.

By selecting the appropriate T25 code, professionals can indicate the type, degree, and laterality of burns or corrosions affecting the ankle and foot, which supports effective treatment tracking and health record accuracy.

  • Injury, poisoning and certain other consequences of external causes (S00–T88)

    • Burns and corrosions of external body surface, specified by site (T20-T25)

        • Burn and corrosion of ankle and foot (T25)

        • T25 Burn and corrosion of ankle and foot
        • T25.0 Burn of unspecified degree of ankle and foot
        • T25.01 Burn of unspecified degree of ankle
        • T25.011 Burn of unspecified degree of right ankle
        • T25.011A Burn of unspecified degree of right ankle, initial encounter
        • T25.011D Burn of unspecified degree of right ankle, subsequent encounter
        • T25.011S Burn of unspecified degree of right ankle, sequela
        • T25.012 Burn of unspecified degree of left ankle
        • T25.012A Burn of unspecified degree of left ankle, initial encounter
        • T25.012D Burn of unspecified degree of left ankle, subsequent encounter
        • T25.012S Burn of unspecified degree of left ankle, sequela
        • T25.019 Burn of unspecified degree of unspecified ankle
        • T25.019A Burn of unspecified degree of unspecified ankle, initial encounter
        • T25.019D Burn of unspecified degree of unspecified ankle, subsequent encounter
        • T25.019S Burn of unspecified degree of unspecified ankle, sequela
        • T25.02 Burn of unspecified degree of foot
        • T25.021 Burn of unspecified degree of right foot
        • T25.021A Burn of unspecified degree of right foot, initial encounter
        • T25.021D Burn of unspecified degree of right foot, subsequent encounter
        • T25.021S Burn of unspecified degree of right foot, sequela
        • T25.022 Burn of unspecified degree of left foot
        • T25.022A Burn of unspecified degree of left foot, initial encounter
        • T25.022D Burn of unspecified degree of left foot, subsequent encounter
        • T25.022S Burn of unspecified degree of left foot, sequela
        • T25.029 Burn of unspecified degree of unspecified foot
        • T25.029A Burn of unspecified degree of unspecified foot, initial encounter
        • T25.029D Burn of unspecified degree of unspecified foot, subsequent encounter
        • T25.029S Burn of unspecified degree of unspecified foot, sequela
        • T25.03 Burn of unspecified degree of toe(s) (nail)
        • T25.031 Burn of unspecified degree of right toe(s) (nail)
        • T25.031A Burn of unspecified degree of right toe(s) (nail), initial encounter
        • T25.031D Burn of unspecified degree of right toe(s) (nail), subsequent encounter
        • T25.031S Burn of unspecified degree of right toe(s) (nail), sequela
        • T25.032 Burn of unspecified degree of left toe(s) (nail)
        • T25.032A Burn of unspecified degree of left toe(s) (nail), initial encounter
        • T25.032D Burn of unspecified degree of left toe(s) (nail), subsequent encounter
        • T25.032S Burn of unspecified degree of left toe(s) (nail), sequela
        • T25.039 Burn of unspecified degree of unspecified toe(s) (nail)
        • T25.039A Burn of unspecified degree of unspecified toe(s) (nail), initial encounter
        • T25.039D Burn of unspecified degree of unspecified toe(s) (nail), subsequent encounter
        • T25.039S Burn of unspecified degree of unspecified toe(s) (nail), sequela
        • T25.09 Burn of unspecified degree of multiple sites of ankle and foot
        • T25.091 Burn of unspecified degree of multiple sites of right ankle and foot
        • T25.091A Burn of unspecified degree of multiple sites of right ankle and foot, initial encounter
        • T25.091D Burn of unspecified degree of multiple sites of right ankle and foot, subsequent encounter
        • T25.091S Burn of unspecified degree of multiple sites of right ankle and foot, sequela
        • T25.092 Burn of unspecified degree of multiple sites of left ankle and foot
        • T25.092A Burn of unspecified degree of multiple sites of left ankle and foot, initial encounter
        • T25.092D Burn of unspecified degree of multiple sites of left ankle and foot, subsequent encounter
        • T25.092S Burn of unspecified degree of multiple sites of left ankle and foot, sequela
        • T25.099 Burn of unspecified degree of multiple sites of unspecified ankle and foot
        • T25.099A Burn of unspecified degree of multiple sites of unspecified ankle and foot, initial encounter
        • T25.099D Burn of unspecified degree of multiple sites of unspecified ankle and foot, subsequent encounter
        • T25.099S Burn of unspecified degree of multiple sites of unspecified ankle and foot, sequela
        • T25.1 Burn of first degree of ankle and foot
        • T25.11 Burn of first degree of ankle
        • T25.111 Burn of first degree of right ankle
        • T25.111A Burn of first degree of right ankle, initial encounter
        • T25.111D Burn of first degree of right ankle, subsequent encounter
        • T25.111S Burn of first degree of right ankle, sequela
        • T25.112 Burn of first degree of left ankle
        • T25.112A Burn of first degree of left ankle, initial encounter
        • T25.112D Burn of first degree of left ankle, subsequent encounter
        • T25.112S Burn of first degree of left ankle, sequela
        • T25.119 Burn of first degree of unspecified ankle
        • T25.119A Burn of first degree of unspecified ankle, initial encounter
        • T25.119D Burn of first degree of unspecified ankle, subsequent encounter
        • T25.119S Burn of first degree of unspecified ankle, sequela
        • T25.12 Burn of first degree of foot
        • T25.121 Burn of first degree of right foot
        • T25.121A Burn of first degree of right foot, initial encounter
        • T25.121D Burn of first degree of right foot, subsequent encounter
        • T25.121S Burn of first degree of right foot, sequela
        • T25.122 Burn of first degree of left foot
        • T25.122A Burn of first degree of left foot, initial encounter
        • T25.122D Burn of first degree of left foot, subsequent encounter
        • T25.122S Burn of first degree of left foot, sequela
        • T25.129 Burn of first degree of unspecified foot
        • T25.129A Burn of first degree of unspecified foot, initial encounter
        • T25.129D Burn of first degree of unspecified foot, subsequent encounter
        • T25.129S Burn of first degree of unspecified foot, sequela
        • T25.13 Burn of first degree of toe(s) (nail)
        • T25.131 Burn of first degree of right toe(s) (nail)
        • T25.131A Burn of first degree of right toe(s) (nail), initial encounter
        • T25.131D Burn of first degree of right toe(s) (nail), subsequent encounter
        • T25.131S Burn of first degree of right toe(s) (nail), sequela
        • T25.132 Burn of first degree of left toe(s) (nail)
        • T25.132A Burn of first degree of left toe(s) (nail), initial encounter
        • T25.132D Burn of first degree of left toe(s) (nail), subsequent encounter
        • T25.132S Burn of first degree of left toe(s) (nail), sequela
        • T25.139 Burn of first degree of unspecified toe(s) (nail)
        • T25.139A Burn of first degree of unspecified toe(s) (nail), initial encounter
        • T25.139D Burn of first degree of unspecified toe(s) (nail), subsequent encounter
        • T25.139S Burn of first degree of unspecified toe(s) (nail), sequela
        • T25.19 Burn of first degree of multiple sites of ankle and foot
        • T25.191 Burn of first degree of multiple sites of right ankle and foot
        • T25.191A Burn of first degree of multiple sites of right ankle and foot, initial encounter
        • T25.191D Burn of first degree of multiple sites of right ankle and foot, subsequent encounter
        • T25.191S Burn of first degree of multiple sites of right ankle and foot, sequela
        • T25.192 Burn of first degree of multiple sites of left ankle and foot
        • T25.192A Burn of first degree of multiple sites of left ankle and foot, initial encounter
        • T25.192D Burn of first degree of multiple sites of left ankle and foot, subsequent encounter
        • T25.192S Burn of first degree of multiple sites of left ankle and foot, sequela
        • T25.199 Burn of first degree of multiple sites of unspecified ankle and foot
        • T25.199A Burn of first degree of multiple sites of unspecified ankle and foot, initial encounter
        • T25.199D Burn of first degree of multiple sites of unspecified ankle and foot, subsequent encounter
        • T25.199S Burn of first degree of multiple sites of unspecified ankle and foot, sequela
        • T25.2 Burn of second degree of ankle and foot
        • T25.21 Burn of second degree of ankle
        • T25.211 Burn of second degree of right ankle
        • T25.211A Burn of second degree of right ankle, initial encounter
        • T25.211D Burn of second degree of right ankle, subsequent encounter
        • T25.211S Burn of second degree of right ankle, sequela
        • T25.212 Burn of second degree of left ankle
        • T25.212A Burn of second degree of left ankle, initial encounter
        • T25.212D Burn of second degree of left ankle, subsequent encounter
        • T25.212S Burn of second degree of left ankle, sequela
        • T25.219 Burn of second degree of unspecified ankle
        • T25.219A Burn of second degree of unspecified ankle, initial encounter
        • T25.219D Burn of second degree of unspecified ankle, subsequent encounter
        • T25.219S Burn of second degree of unspecified ankle, sequela
        • T25.22 Burn of second degree of foot
        • T25.221 Burn of second degree of right foot
        • T25.221A Burn of second degree of right foot, initial encounter
        • T25.221D Burn of second degree of right foot, subsequent encounter
        • T25.221S Burn of second degree of right foot, sequela
        • T25.222 Burn of second degree of left foot
        • T25.222A Burn of second degree of left foot, initial encounter
        • T25.222D Burn of second degree of left foot, subsequent encounter
        • T25.222S Burn of second degree of left foot, sequela
        • T25.229 Burn of second degree of unspecified foot
        • T25.229A Burn of second degree of unspecified foot, initial encounter
        • T25.229D Burn of second degree of unspecified foot, subsequent encounter
        • T25.229S Burn of second degree of unspecified foot, sequela
        • T25.23 Burn of second degree of toe(s) (nail)
        • T25.231 Burn of second degree of right toe(s) (nail)
        • T25.231A Burn of second degree of right toe(s) (nail), initial encounter
        • T25.231D Burn of second degree of right toe(s) (nail), subsequent encounter
        • T25.231S Burn of second degree of right toe(s) (nail), sequela
        • T25.232 Burn of second degree of left toe(s) (nail)
        • T25.232A Burn of second degree of left toe(s) (nail), initial encounter
        • T25.232D Burn of second degree of left toe(s) (nail), subsequent encounter
        • T25.232S Burn of second degree of left toe(s) (nail), sequela
        • T25.239 Burn of second degree of unspecified toe(s) (nail)
        • T25.239A Burn of second degree of unspecified toe(s) (nail), initial encounter
        • T25.239D Burn of second degree of unspecified toe(s) (nail), subsequent encounter
        • T25.239S Burn of second degree of unspecified toe(s) (nail), sequela
        • T25.29 Burn of second degree of multiple sites of ankle and foot
        • T25.291 Burn of second degree of multiple sites of right ankle and foot
        • T25.291A Burn of second degree of multiple sites of right ankle and foot, initial encounter
        • T25.291D Burn of second degree of multiple sites of right ankle and foot, subsequent encounter
        • T25.291S Burn of second degree of multiple sites of right ankle and foot, sequela
        • T25.292 Burn of second degree of multiple sites of left ankle and foot
        • T25.292A Burn of second degree of multiple sites of left ankle and foot, initial encounter
        • T25.292D Burn of second degree of multiple sites of left ankle and foot, subsequent encounter
        • T25.292S Burn of second degree of multiple sites of left ankle and foot, sequela
        • T25.299 Burn of second degree of multiple sites of unspecified ankle and foot
        • T25.299A Burn of second degree of multiple sites of unspecified ankle and foot, initial encounter
        • T25.299D Burn of second degree of multiple sites of unspecified ankle and foot, subsequent encounter
        • T25.299S Burn of second degree of multiple sites of unspecified ankle and foot, sequela
        • T25.3 Burn of third degree of ankle and foot
        • T25.31 Burn of third degree of ankle
        • T25.311 Burn of third degree of right ankle
        • T25.311A Burn of third degree of right ankle, initial encounter
        • T25.311D Burn of third degree of right ankle, subsequent encounter
        • T25.311S Burn of third degree of right ankle, sequela
        • T25.312 Burn of third degree of left ankle
        • T25.312A Burn of third degree of left ankle, initial encounter
        • T25.312D Burn of third degree of left ankle, subsequent encounter
        • T25.312S Burn of third degree of left ankle, sequela
        • T25.319 Burn of third degree of unspecified ankle
        • T25.319A Burn of third degree of unspecified ankle, initial encounter
        • T25.319D Burn of third degree of unspecified ankle, subsequent encounter
        • T25.319S Burn of third degree of unspecified ankle, sequela
        • T25.32 Burn of third degree of foot
        • T25.321 Burn of third degree of right foot
        • T25.321A Burn of third degree of right foot, initial encounter
        • T25.321D Burn of third degree of right foot, subsequent encounter
        • T25.321S Burn of third degree of right foot, sequela
        • T25.322 Burn of third degree of left foot
        • T25.322A Burn of third degree of left foot, initial encounter
        • T25.322D Burn of third degree of left foot, subsequent encounter
        • T25.322S Burn of third degree of left foot, sequela
        • T25.329 Burn of third degree of unspecified foot
        • T25.329A Burn of third degree of unspecified foot, initial encounter
        • T25.329D Burn of third degree of unspecified foot, subsequent encounter
        • T25.329S Burn of third degree of unspecified foot, sequela
        • T25.33 Burn of third degree of toe(s) (nail)
        • T25.331 Burn of third degree of right toe(s) (nail)
        • T25.331A Burn of third degree of right toe(s) (nail), initial encounter
        • T25.331D Burn of third degree of right toe(s) (nail), subsequent encounter
        • T25.331S Burn of third degree of right toe(s) (nail), sequela
        • T25.332 Burn of third degree of left toe(s) (nail)
        • T25.332A Burn of third degree of left toe(s) (nail), initial encounter
        • T25.332D Burn of third degree of left toe(s) (nail), subsequent encounter
        • T25.332S Burn of third degree of left toe(s) (nail), sequela
        • T25.339 Burn of third degree of unspecified toe(s) (nail)
        • T25.339A Burn of third degree of unspecified toe(s) (nail), initial encounter
        • T25.339D Burn of third degree of unspecified toe(s) (nail), subsequent encounter
        • T25.339S Burn of third degree of unspecified toe(s) (nail), sequela
        • T25.39 Burn of third degree of multiple sites of ankle and foot
        • T25.391 Burn of third degree of multiple sites of right ankle and foot
        • T25.391A Burn of third degree of multiple sites of right ankle and foot, initial encounter
        • T25.391D Burn of third degree of multiple sites of right ankle and foot, subsequent encounter
        • T25.391S Burn of third degree of multiple sites of right ankle and foot, sequela
        • T25.392 Burn of third degree of multiple sites of left ankle and foot
        • T25.392A Burn of third degree of multiple sites of left ankle and foot, initial encounter
        • T25.392D Burn of third degree of multiple sites of left ankle and foot, subsequent encounter
        • T25.392S Burn of third degree of multiple sites of left ankle and foot, sequela
        • T25.399 Burn of third degree of multiple sites of unspecified ankle and foot
        • T25.399A Burn of third degree of multiple sites of unspecified ankle and foot, initial encounter
        • T25.399D Burn of third degree of multiple sites of unspecified ankle and foot, subsequent encounter
        • T25.399S Burn of third degree of multiple sites of unspecified ankle and foot, sequela
        • T25.4 Corrosion of unspecified degree of ankle and foot
        • T25.41 Corrosion of unspecified degree of ankle
        • T25.411 Corrosion of unspecified degree of right ankle
        • T25.411A Corrosion of unspecified degree of right ankle, initial encounter
        • T25.411D Corrosion of unspecified degree of right ankle, subsequent encounter
        • T25.411S Corrosion of unspecified degree of right ankle, sequela
        • T25.412 Corrosion of unspecified degree of left ankle
        • T25.412A Corrosion of unspecified degree of left ankle, initial encounter
        • T25.412D Corrosion of unspecified degree of left ankle, subsequent encounter
        • T25.412S Corrosion of unspecified degree of left ankle, sequela
        • T25.419 Corrosion of unspecified degree of unspecified ankle
        • T25.419A Corrosion of unspecified degree of unspecified ankle, initial encounter
        • T25.419D Corrosion of unspecified degree of unspecified ankle, subsequent encounter
        • T25.419S Corrosion of unspecified degree of unspecified ankle, sequela
        • T25.42 Corrosion of unspecified degree of foot
        • T25.421 Corrosion of unspecified degree of right foot
        • T25.421A Corrosion of unspecified degree of right foot, initial encounter
        • T25.421D Corrosion of unspecified degree of right foot, subsequent encounter
        • T25.421S Corrosion of unspecified degree of right foot, sequela
        • T25.422 Corrosion of unspecified degree of left foot
        • T25.422A Corrosion of unspecified degree of left foot, initial encounter
        • T25.422D Corrosion of unspecified degree of left foot, subsequent encounter
        • T25.422S Corrosion of unspecified degree of left foot, sequela
        • T25.429 Corrosion of unspecified degree of unspecified foot
        • T25.429A Corrosion of unspecified degree of unspecified foot, initial encounter
        • T25.429D Corrosion of unspecified degree of unspecified foot, subsequent encounter
        • T25.429S Corrosion of unspecified degree of unspecified foot, sequela
        • T25.43 Corrosion of unspecified degree of toe(s) (nail)
        • T25.431 Corrosion of unspecified degree of right toe(s) (nail)
        • T25.431A Corrosion of unspecified degree of right toe(s) (nail), initial encounter
        • T25.431D Corrosion of unspecified degree of right toe(s) (nail), subsequent encounter
        • T25.431S Corrosion of unspecified degree of right toe(s) (nail), sequela
        • T25.432 Corrosion of unspecified degree of left toe(s) (nail)
        • T25.432A Corrosion of unspecified degree of left toe(s) (nail), initial encounter
        • T25.432D Corrosion of unspecified degree of left toe(s) (nail), subsequent encounter
        • T25.432S Corrosion of unspecified degree of left toe(s) (nail), sequela
        • T25.439 Corrosion of unspecified degree of unspecified toe(s) (nail)
        • T25.439A Corrosion of unspecified degree of unspecified toe(s) (nail), initial encounter
        • T25.439D Corrosion of unspecified degree of unspecified toe(s) (nail), subsequent encounter
        • T25.439S Corrosion of unspecified degree of unspecified toe(s) (nail), sequela
        • T25.49 Corrosion of unspecified degree of multiple sites of ankle and foot
        • T25.491 Corrosion of unspecified degree of multiple sites of right ankle and foot
        • T25.491A Corrosion of unspecified degree of multiple sites of right ankle and foot, initial encounter
        • T25.491D Corrosion of unspecified degree of multiple sites of right ankle and foot, subsequent encounter
        • T25.491S Corrosion of unspecified degree of multiple sites of right ankle and foot, sequela
        • T25.492 Corrosion of unspecified degree of multiple sites of left ankle and foot
        • T25.492A Corrosion of unspecified degree of multiple sites of left ankle and foot, initial encounter
        • T25.492D Corrosion of unspecified degree of multiple sites of left ankle and foot, subsequent encounter
        • T25.492S Corrosion of unspecified degree of multiple sites of left ankle and foot, sequela
        • T25.499 Corrosion of unspecified degree of multiple sites of unspecified ankle and foot
        • T25.499A Corrosion of unspecified degree of multiple sites of unspecified ankle and foot, initial encounter
        • T25.499D Corrosion of unspecified degree of multiple sites of unspecified ankle and foot, subsequent encounter
        • T25.499S Corrosion of unspecified degree of multiple sites of unspecified ankle and foot, sequela
        • T25.5 Corrosion of first degree of ankle and foot
        • T25.51 Corrosion of first degree of ankle
        • T25.511 Corrosion of first degree of right ankle
        • T25.511A Corrosion of first degree of right ankle, initial encounter
        • T25.511D Corrosion of first degree of right ankle, subsequent encounter
        • T25.511S Corrosion of first degree of right ankle, sequela
        • T25.512 Corrosion of first degree of left ankle
        • T25.512A Corrosion of first degree of left ankle, initial encounter
        • T25.512D Corrosion of first degree of left ankle, subsequent encounter
        • T25.512S Corrosion of first degree of left ankle, sequela
        • T25.519 Corrosion of first degree of unspecified ankle
        • T25.519A Corrosion of first degree of unspecified ankle, initial encounter
        • T25.519D Corrosion of first degree of unspecified ankle, subsequent encounter
        • T25.519S Corrosion of first degree of unspecified ankle, sequela
        • T25.52 Corrosion of first degree of foot
        • T25.521 Corrosion of first degree of right foot
        • T25.521A Corrosion of first degree of right foot, initial encounter
        • T25.521D Corrosion of first degree of right foot, subsequent encounter
        • T25.521S Corrosion of first degree of right foot, sequela
        • T25.522 Corrosion of first degree of left foot
        • T25.522A Corrosion of first degree of left foot, initial encounter
        • T25.522D Corrosion of first degree of left foot, subsequent encounter
        • T25.522S Corrosion of first degree of left foot, sequela
        • T25.529 Corrosion of first degree of unspecified foot
        • T25.529A Corrosion of first degree of unspecified foot, initial encounter
        • T25.529D Corrosion of first degree of unspecified foot, subsequent encounter
        • T25.529S Corrosion of first degree of unspecified foot, sequela
        • T25.53 Corrosion of first degree of toe(s) (nail)
        • T25.531 Corrosion of first degree of right toe(s) (nail)
        • T25.531A Corrosion of first degree of right toe(s) (nail), initial encounter
        • T25.531D Corrosion of first degree of right toe(s) (nail), subsequent encounter
        • T25.531S Corrosion of first degree of right toe(s) (nail), sequela
        • T25.532 Corrosion of first degree of left toe(s) (nail)
        • T25.532A Corrosion of first degree of left toe(s) (nail), initial encounter
        • T25.532D Corrosion of first degree of left toe(s) (nail), subsequent encounter
        • T25.532S Corrosion of first degree of left toe(s) (nail), sequela
        • T25.539 Corrosion of first degree of unspecified toe(s) (nail)
        • T25.539A Corrosion of first degree of unspecified toe(s) (nail), initial encounter
        • T25.539D Corrosion of first degree of unspecified toe(s) (nail), subsequent encounter
        • T25.539S Corrosion of first degree of unspecified toe(s) (nail), sequela
        • T25.59 Corrosion of first degree of multiple sites of ankle and foot
        • T25.591 Corrosion of first degree of multiple sites of right ankle and foot
        • T25.591A Corrosion of first degree of multiple sites of right ankle and foot, initial encounter
        • T25.591D Corrosion of first degree of multiple sites of right ankle and foot, subsequent encounter
        • T25.591S Corrosion of first degree of multiple sites of right ankle and foot, sequela
        • T25.592 Corrosion of first degree of multiple sites of left ankle and foot
        • T25.592A Corrosion of first degree of multiple sites of left ankle and foot, initial encounter
        • T25.592D Corrosion of first degree of multiple sites of left ankle and foot, subsequent encounter
        • T25.592S Corrosion of first degree of multiple sites of left ankle and foot, sequela
        • T25.599 Corrosion of first degree of multiple sites of unspecified ankle and foot
        • T25.599A Corrosion of first degree of multiple sites of unspecified ankle and foot, initial encounter
        • T25.599D Corrosion of first degree of multiple sites of unspecified ankle and foot, subsequent encounter
        • T25.599S Corrosion of first degree of multiple sites of unspecified ankle and foot, sequela
        • T25.6 Corrosion of second degree of ankle and foot
        • T25.61 Corrosion of second degree of ankle
        • T25.611 Corrosion of second degree of right ankle
        • T25.611A Corrosion of second degree of right ankle, initial encounter
        • T25.611D Corrosion of second degree of right ankle, subsequent encounter
        • T25.611S Corrosion of second degree of right ankle, sequela
        • T25.612 Corrosion of second degree of left ankle
        • T25.612A Corrosion of second degree of left ankle, initial encounter
        • T25.612D Corrosion of second degree of left ankle, subsequent encounter
        • T25.612S Corrosion of second degree of left ankle, sequela
        • T25.619 Corrosion of second degree of unspecified ankle
        • T25.619A Corrosion of second degree of unspecified ankle, initial encounter
        • T25.619D Corrosion of second degree of unspecified ankle, subsequent encounter
        • T25.619S Corrosion of second degree of unspecified ankle, sequela
        • T25.62 Corrosion of second degree of foot
        • T25.621 Corrosion of second degree of right foot
        • T25.621A Corrosion of second degree of right foot, initial encounter
        • T25.621D Corrosion of second degree of right foot, subsequent encounter
        • T25.621S Corrosion of second degree of right foot, sequela
        • T25.622 Corrosion of second degree of left foot
        • T25.622A Corrosion of second degree of left foot, initial encounter
        • T25.622D Corrosion of second degree of left foot, subsequent encounter
        • T25.622S Corrosion of second degree of left foot, sequela
        • T25.629 Corrosion of second degree of unspecified foot
        • T25.629A Corrosion of second degree of unspecified foot, initial encounter
        • T25.629D Corrosion of second degree of unspecified foot, subsequent encounter
        • T25.629S Corrosion of second degree of unspecified foot, sequela
        • T25.63 Corrosion of second degree of toe(s) (nail)
        • T25.631 Corrosion of second degree of right toe(s) (nail)
        • T25.631A Corrosion of second degree of right toe(s) (nail), initial encounter
        • T25.631D Corrosion of second degree of right toe(s) (nail), subsequent encounter
        • T25.631S Corrosion of second degree of right toe(s) (nail), sequela
        • T25.632 Corrosion of second degree of left toe(s) (nail)
        • T25.632A Corrosion of second degree of left toe(s) (nail), initial encounter
        • T25.632D Corrosion of second degree of left toe(s) (nail), subsequent encounter
        • T25.632S Corrosion of second degree of left toe(s) (nail), sequela
        • T25.639 Corrosion of second degree of unspecified toe(s) (nail)
        • T25.639A Corrosion of second degree of unspecified toe(s) (nail), initial encounter
        • T25.639D Corrosion of second degree of unspecified toe(s) (nail), subsequent encounter
        • T25.639S Corrosion of second degree of unspecified toe(s) (nail), sequela
        • T25.69 Corrosion of second degree of multiple sites of ankle and foot
        • T25.691 Corrosion of second degree of right ankle and foot
        • T25.691A Corrosion of second degree of right ankle and foot, initial encounter
        • T25.691D Corrosion of second degree of right ankle and foot, subsequent encounter
        • T25.691S Corrosion of second degree of right ankle and foot, sequela
        • T25.692 Corrosion of second degree of left ankle and foot
        • T25.692A Corrosion of second degree of left ankle and foot, initial encounter
        • T25.692D Corrosion of second degree of left ankle and foot, subsequent encounter
        • T25.692S Corrosion of second degree of left ankle and foot, sequela
        • T25.699 Corrosion of second degree of unspecified ankle and foot
        • T25.699A Corrosion of second degree of unspecified ankle and foot, initial encounter
        • T25.699D Corrosion of second degree of unspecified ankle and foot, subsequent encounter
        • T25.699S Corrosion of second degree of unspecified ankle and foot, sequela
        • T25.7 Corrosion of third degree of ankle and foot
        • T25.71 Corrosion of third degree of ankle
        • T25.711 Corrosion of third degree of right ankle
        • T25.711A Corrosion of third degree of right ankle, initial encounter
        • T25.711D Corrosion of third degree of right ankle, subsequent encounter
        • T25.711S Corrosion of third degree of right ankle, sequela
        • T25.712 Corrosion of third degree of left ankle
        • T25.712A Corrosion of third degree of left ankle, initial encounter
        • T25.712D Corrosion of third degree of left ankle, subsequent encounter
        • T25.712S Corrosion of third degree of left ankle, sequela
        • T25.719 Corrosion of third degree of unspecified ankle
        • T25.719A Corrosion of third degree of unspecified ankle, initial encounter
        • T25.719D Corrosion of third degree of unspecified ankle, subsequent encounter
        • T25.719S Corrosion of third degree of unspecified ankle, sequela
        • T25.72 Corrosion of third degree of foot
        • T25.721 Corrosion of third degree of right foot
        • T25.721A Corrosion of third degree of right foot, initial encounter
        • T25.721D Corrosion of third degree of right foot, subsequent encounter
        • T25.721S Corrosion of third degree of right foot, sequela
        • T25.722 Corrosion of third degree of left foot
        • T25.722A Corrosion of third degree of left foot, initial encounter
        • T25.722D Corrosion of third degree of left foot, subsequent encounter
        • T25.722S Corrosion of third degree of left foot, sequela
        • T25.729 Corrosion of third degree of unspecified foot
        • T25.729A Corrosion of third degree of unspecified foot, initial encounter
        • T25.729D Corrosion of third degree of unspecified foot, subsequent encounter
        • T25.729S Corrosion of third degree of unspecified foot, sequela
        • T25.73 Corrosion of third degree of toe(s) (nail)
        • T25.731 Corrosion of third degree of right toe(s) (nail)
        • T25.731A Corrosion of third degree of right toe(s) (nail), initial encounter
        • T25.731D Corrosion of third degree of right toe(s) (nail), subsequent encounter
        • T25.731S Corrosion of third degree of right toe(s) (nail), sequela
        • T25.732 Corrosion of third degree of left toe(s) (nail)
        • T25.732A Corrosion of third degree of left toe(s) (nail), initial encounter
        • T25.732D Corrosion of third degree of left toe(s) (nail), subsequent encounter
        • T25.732S Corrosion of third degree of left toe(s) (nail), sequela
        • T25.739 Corrosion of third degree of unspecified toe(s) (nail)
        • T25.739A Corrosion of third degree of unspecified toe(s) (nail), initial encounter
        • T25.739D Corrosion of third degree of unspecified toe(s) (nail), subsequent encounter
        • T25.739S Corrosion of third degree of unspecified toe(s) (nail), sequela
        • T25.79 Corrosion of third degree of multiple sites of ankle and foot
        • T25.791 Corrosion of third degree of multiple sites of right ankle and foot
        • T25.791A Corrosion of third degree of multiple sites of right ankle and foot, initial encounter
        • T25.791D Corrosion of third degree of multiple sites of right ankle and foot, subsequent encounter
        • T25.791S Corrosion of third degree of multiple sites of right ankle and foot, sequela
        • T25.792 Corrosion of third degree of multiple sites of left ankle and foot
        • T25.792A Corrosion of third degree of multiple sites of left ankle and foot, initial encounter
        • T25.792D Corrosion of third degree of multiple sites of left ankle and foot, subsequent encounter
        • T25.792S Corrosion of third degree of multiple sites of left ankle and foot, sequela
        • T25.799 Corrosion of third degree of multiple sites of unspecified ankle and foot
        • T25.799A Corrosion of third degree of multiple sites of unspecified ankle and foot, initial encounter
        • T25.799D Corrosion of third degree of multiple sites of unspecified ankle and foot, subsequent encounter
        • T25.799S Corrosion of third degree of multiple sites of unspecified ankle and foot, sequela

Instructional Notations

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.

  • The appropriate 7th character is to be added to each code from category T25

7th Character

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

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela