ICD-10-CM › M00-M99 › M70-M79 › M77 Other enthesopathies › M77.5

M77.5

Other enthesopathy of foot and ankle

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:

  • M77.50 Other enthesopathy of unspecified foot and ankle
  • M77.51 Other enthesopathy of right foot and ankle
  • M77.52 Other enthesopathy of left foot and ankle

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 Other enthesopathy of foot
  2. FY2020 Description revised Other enthesopathy of foot Other enthesopathy of foot and ankle

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 M77 Other enthesopathies

Excludes1 - never coded here

  • bursitis NOS (M71.9-)

Excludes2 - not included here

  • bursitis due to use, overuse and pressure (M70.-)
  • osteophyte (M25.7)
  • spinal enthesopathy (M46.0-)

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
M77.0 Medial epicondylitis Not billable
M77.1 Lateral epicondylitis Not billable
M77.2 Periarthritis of wrist Not billable
M77.3 Calcaneal spur Not billable
M77.4 Metatarsalgia Not billable
M77.8 Other enthesopathies, not elsewhere classified Valid
M77.9 Enthesopathy, unspecified Valid