ICD-10-CM › Q00-QA1 › Q90-Q99 › Q99.8 Other specified chromosome abnormalities › Q99.81

Q99.81

Usher syndrome

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, FY2026 onwards. It has never been valid for submission on its own.

Submit one of these 5 more specific codes instead:

What has happened to this code

Every change the publisher made, from 2026 to now.

  1. FY2026 Added to the code set Usher syndrome

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 the Q90-Q99 section Chromosomal abnormalities, not elsewhere classified (Q90-Q99)

Excludes2 - not included here

  • mitochondrial metabolic disorders (E88.4-)

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.

Showing 40 of 141 index phrases.

Codes in the same group

CodeDescriptionStatus
Q99.89 Other specified chromosome abnormalities Valid