ICD-10-CM > M00-M99 > M70-M79 > M79 > M79.6 > M79.64 M79.64 Pain in hand and fingers Non-Billable/Non-Specific Codes M79.641Pain in right handM79.642Pain in left handM79.643Pain in unspecified handM79.644Pain in right finger(s)M79.645Pain in left finger(s)M79.646Pain in unspecified finger(s)