ICD-10-CM › S00-T88 › T20-T25 › T23.7 Corrosion of third degree of wrist and hand › T23.71

T23.71

Corrosion of third degree of thumb (nail)

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:

  • T23.711 Corrosion of third degree of right thumb (nail) (also a header)
  • T23.712 Corrosion of third degree of left thumb (nail) (also a header)
  • T23.719 Corrosion of third degree of unspecified thumb (nail) (also a header)

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

What has happened to this code

Every change the publisher made, from 2012 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. FY2012 Added to the draft code set draft Corrosion of third degree of thumb (nail)

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 T23 Burn and corrosion of wrist and hand

Seventh character required

  • The appropriate 7th character is to be added to each code from category T23

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]

Codes in the same group

CodeDescriptionStatus
T23.70 Corrosion of third degree of hand, unspecified site Not billable
T23.72 Corrosion of third degree of single finger (nail) except thumb Not billable
T23.73 Corrosion of third degree of multiple fingers (nail), not including thumb Not billable
T23.74 Corrosion of third degree of multiple fingers (nail), including thumb Not billable
T23.75 Corrosion of third degree of palm Not billable
T23.76 Corrosion of third degree of back of hand Not billable
T23.77 Corrosion of third degree of wrist Not billable
T23.79 Corrosion of third degree of multiple sites of wrist and hand Not billable