ICD-10-CM › S00-T88 › T20-T25 › T25.59 Corrosion of first degree of... › T25.592

T25.592

Corrosion of first degree of multiple sites of left ankle and foot

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

  • 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

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2014 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2014 Added to the draft code set draft Corrosion of first degree of multiple sites of left ankle and foot

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from T25 Burn and corrosion of ankle and foot

Seventh character required

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

Inherited from the T20-T25 section Burns and corrosions of external body surface, specified by site (T20-T25)

Use additional code

  • code from category T31 or T32 to identify extent of body surface involved

Includes

  • burns and corrosions of first degree [erythema]
  • burns and corrosions of second degree [blisters][epidermal loss]
  • burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
T25.591 Corrosion of first degree of multiple sites of right ankle and foot Not billable
T25.599 Corrosion of first degree of multiple sites of unspecified ankle and foot Not billable