Corrosions of other internal organs

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:

T28.99XA Corrosions of other internal organs, initial encounter
T28.99XD Corrosions of other internal organs, subsequent encounter
T28.99XS Corrosions of other internal organs, 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.

FY2014 Added to the draft code set draft Corrosions of other internal organs

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 T28 Burn and corrosion of other internal organs

Seventh character required

The appropriate 7th character is to be added to each code from category T28

Use additional code

external cause code to identify the source and intent of the burn (X00-X19, X75-X77, X96-X98)
external cause code to identify place (Y92)

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.

Corrosion > internal organ > specified organ NEC

Codes in the same group

Code	Description	Status
T28.90	Corrosions of unspecified internal organs	Not billable
T28.91	Corrosions of ear drum	Not billable