Postproc seroma of skin, subcu fol a dermatologic procedure

This code identifies a collection of serous fluid that develops under the skin or in subcutaneous tissue as a complication after a dermatologic surgical intervention. It represents a non-infectious fluid accumulation that can cause swelling, discomfort, and potentially delay wound healing.

Apply this code when documentation clearly indicates a seroma formed in the skin or subcutaneous layers specifically as a sequela of a dermatologic procedure, such as an excision, biopsy, or Mohs surgery. The physician's notes should explicitly state "postprocedural seroma" and link it to the recent dermatologic intervention.

• Ensure the seroma is explicitly linked to a dermatologic procedure; seromas from other surgical specialties would use different codes.
• Do not use this code if the fluid collection is purulent (abscess) or hemorrhagic (hematoma); these have distinct ICD-10-CM codes.
• Sequence this code as a secondary diagnosis if the primary reason for the encounter is treatment of the seroma (e.g., aspiration), with the original dermatologic condition or procedure code as primary.