ICD-10-CM > M00-M99 > M65-M67 > M65 > M65.0 > M65.05 M65.05 Abscess of tendon sheath, thigh Non-Billable/Non-Specific Codes M65.051Abscess of tendon sheath, right thighM65.052Abscess of tendon sheath, left thighM65.059Abscess of tendon sheath, unspecified thigh