ICD-10-CM › S00-T88 › T33-T34 › T33.52 Superficial frostbite of hand › T33.521

T33.521

Superficial frostbite of right hand

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:

  • T33.521A Superficial frostbite of right hand, initial encounter
  • T33.521D Superficial frostbite of right hand, subsequent encounter
  • T33.521S Superficial frostbite of right hand, 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 Superficial frostbite of right hand

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 T33 Superficial frostbite

Seventh character required

  • The appropriate 7th character is to be added to each code from category T33

Includes

  • frostbite with partial thickness skin loss

Inherited from the T33-T34 section Frostbite (T33-T34)

Excludes2 - not included here

  • hypothermia and other effects of reduced temperature (T68, T69.-)

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
T33.522 Superficial frostbite of left hand Not billable
T33.529 Superficial frostbite of unspecified hand Not billable