Abscess of tendon sheath, left thigh

This code signifies an infection with pus formation within the synovial sheath surrounding a tendon in the left thigh. This condition typically presents with localized pain, swelling, warmth, and tenderness along the affected tendon. It indicates an inflammatory response to bacterial invasion within the tendon's protective covering.

Use this code when documentation clearly states an abscess involving a tendon sheath specifically located in the left thigh. This diagnosis is supported by findings such as purulent drainage, positive cultures from the tendon sheath, or imaging (e.g., MRI, ultrasound) demonstrating a fluid collection consistent with an abscess within the left thigh's tendon sheath.

• Ensure the documentation specifies "abscess" and not just tenosynovitis or cellulitis, as these are distinct conditions.
• Verify the laterality (left thigh) is explicitly stated; codes exist for the right and unspecified thigh.
• Consider coding any underlying infection (e.g., Staphylococcus aureus) as an additional diagnosis, if documented.