ICD-10-CM > M00-M99 > M65-M67 > M65 > M65.0 > M65.01 M65.01 Abscess of tendon sheath, shoulder Non-Billable/Non-Specific Codes M65.011Abscess of tendon sheath, right shoulderM65.012Abscess of tendon sheath, left shoulderM65.019Abscess of tendon sheath, unspecified shoulder