ICD-10-CM > S00-T88 > S40-S49 > S44 > S44.8 S44.8 Injury of other nerves at shoulder and upper arm level Non-Billable/Non-Specific Codes S44.8XInjury of other nerves at shoulder and upper arm levelS44.8X1Injury of other nerves at shoulder and upper arm level, right armS44.8X1A..., initial encounterS44.8X1D..., subsequent encounterS44.8X1S..., sequelaS44.8X2Injury of other nerves at shoulder and upper arm level, left armS44.8X2A..., initial encounterS44.8X2D..., subsequent encounterS44.8X2S..., sequelaS44.8X9Injury of other nerves at shoulder and upper arm level, unspecified armS44.8X9A..., initial encounterS44.8X9D..., subsequent encounterS44.8X9S..., sequela