Abscess of tendon sheath, left forearm

This code signifies an infection with pus formation within the synovial sheath surrounding a tendon in the patient's left forearm. This condition is typically acute and causes pain, swelling, and restricted movement in the affected area.

Apply this code when documentation clearly indicates a localized collection of pus within a tendon sheath of the left forearm. Supporting documentation should include physician notes detailing the diagnosis of a tendon sheath abscess, specifying the left forearm as the anatomical site.

• Ensure documentation specifies "abscess" and not just "tenosynovitis" or "infection" without pus formation.
• Verify the laterality is explicitly stated as "left forearm" to avoid incorrect coding.
• Consider an additional code for the causative organism if identified and documented.