ICD-10-CM > S00-T88 > S40-S49 > S44 > S44.1 S44.1 Injury of median nerve at upper arm level Non-Billable/Non-Specific Type 1 Excludes median nerve NOS (S54.1) Codes S44.10Injury of median nerve at upper arm level, unspecified armS44.10XA..., initial encounterS44.10XD..., subsequent encounterS44.10XS..., sequelaS44.11Injury of median nerve at upper arm level, right armS44.11XA..., initial encounterS44.11XD..., subsequent encounterS44.11XS..., sequelaS44.12Injury of median nerve at upper arm level, left armS44.12XA..., initial encounterS44.12XD..., subsequent encounterS44.12XS..., sequela