Monoarthritis, not elsewhere classified, shoulder

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:

M13.111 Monoarthritis, not elsewhere classified, right shoulder
M13.112 Monoarthritis, not elsewhere classified, left shoulder
M13.119 Monoarthritis, not elsewhere classified, unspecified shoulder

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.

FY2012 Added to the draft code set draft Monoarthritis, not elsewhere classified, shoulder

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 M13 Other arthritis

Excludes1 - never coded here

arthrosis (M15-M19)
osteoarthritis (M15-M19)

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.

Monoarthritis > shoulder

Codes in the same group

Code	Description	Status
M13.10	Monoarthritis, not elsewhere classified, unspecified site	Valid
M13.12	Monoarthritis, not elsewhere classified, elbow	Not billable
M13.13	Monoarthritis, not elsewhere classified, wrist	Not billable
M13.14	Monoarthritis, not elsewhere classified, hand	Not billable
M13.15	Monoarthritis, not elsewhere classified, hip	Not billable
M13.16	Monoarthritis, not elsewhere classified, knee	Not billable
M13.17	Monoarthritis, not elsewhere classified, ankle and foot	Not billable