ICD-10-CM > M00-M99 > M65-M67 > M65 > M65.0 > M65.04 M65.04 Abscess of tendon sheath, hand Non-Billable/Non-Specific Codes M65.041Abscess of tendon sheath, right handM65.042Abscess of tendon sheath, left handM65.049Abscess of tendon sheath, unspecified hand