ICD-10-CM > M00-M99 > M65-M67 > M65 > M65.0 M65.0 Abscess of tendon sheath Non-Billable/Non-Specific Use Additional code (B95-B96) to identify bacterial agent. Codes M65.00Abscess of tendon sheath, unspecified siteM65.01Abscess of tendon sheath, shoulderM65.011Abscess of tendon sheath, right shoulderM65.012Abscess of tendon sheath, left shoulderM65.019Abscess of tendon sheath, unspecified shoulderM65.02Abscess of tendon sheath, upper armM65.021Abscess of tendon sheath, right upper armM65.022Abscess of tendon sheath, left upper armM65.029Abscess of tendon sheath, unspecified upper armM65.03Abscess of tendon sheath, forearmM65.031Abscess of tendon sheath, right forearmM65.032Abscess of tendon sheath, left forearmM65.039Abscess of tendon sheath, unspecified forearmM65.04Abscess of tendon sheath, handM65.041Abscess of tendon sheath, right handM65.042Abscess of tendon sheath, left handM65.049Abscess of tendon sheath, unspecified handM65.05Abscess of tendon sheath, thighM65.051Abscess of tendon sheath, right thighM65.052Abscess of tendon sheath, left thighM65.059Abscess of tendon sheath, unspecified thighM65.06Abscess of tendon sheath, lower legM65.061Abscess of tendon sheath, right lower legM65.062Abscess of tendon sheath, left lower legM65.069Abscess of tendon sheath, unspecified lower legM65.07Abscess of tendon sheath, ankle and footM65.071Abscess of tendon sheath, right ankle and footM65.072Abscess of tendon sheath, left ankle and footM65.079Abscess of tendon sheath, unspecified ankle and footM65.08Abscess of tendon sheath, other site