ICD-10-CM › G00-G99 › G50-G59 › G56.2 Lesion of ulnar nerve › G56.21

G56.21

Lesion of ulnar nerve, right upper limb

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 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. FY2007 Added to the draft code set draft Lesion of ulnar nerve, right side
  2. FY2011 Draft description revised draft Lesion of ulnar nerve, right side Lesion of ulnar nerve, right upper limb

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 G56 Mononeuropathies of upper limb

Excludes1 - never coded here

  • current traumatic nerve disorder - see nerve injury by body region

Inherited from the G50-G59 section Nerve, nerve root and plexus disorders (G50-G59)

Excludes1 - never coded here

  • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
  • neuralgia NOS (M79.2)
  • neuritis NOS (M79.2)
  • peripheral neuritis in pregnancy (O26.82-)
  • radiculitis NOS (M54.1-)

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 44 index phrases.

Codes in the same group

CodeDescriptionStatus
G56.20 Lesion of ulnar nerve, unspecified upper limb Valid
G56.22 Lesion of ulnar nerve, left upper limb Valid
G56.23 Lesion of ulnar nerve, bilateral upper limbs Valid