G56.2
Lesion of ulnar nerve
G56.2 is a non-billable ICD-10-CM code header for lesion of ulnar nerve. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G56.20 Lesion of ulnar nerve, unspecified upper limb; G56.21 Lesion of ulnar nerve, right upper limb; G56.22 Lesion of ulnar nerve, left upper limb and G56.23 Lesion of ulnar nerve, bilateral upper limbs. Its coding notes include 6 Excludes1 entries and 8 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- current traumatic nerve disorder - see nerve injury by body region
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Inclusion terms
Conditions classified to this code.
- Tardy ulnar nerve palsy
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 7 entries