ICD-10 Code L56.5 – Disseminated superficial actinic porokeratosis (DSAP) (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L56.5 – Disseminated superficial actinic porokeratosis (DSAP)
What it is
L56.5 identifies disseminated superficial actinic porokeratosis, a sun-related skin disorder marked by multiple small lesions on exposed areas. Use this code when documentation names DSAP specifically.
Clinical signs
Typical findings include numerous thin, ring-shaped or scaly papules, often on the arms or legs, with a raised border. Clinical features vary; refer to documentation.
When to use this code
Use L56.5 when the clinician documents DSAP or disseminated superficial actinic porokeratosis as the diagnosis. It is appropriate for outpatient, dermatology, or problem-list coding when the condition is confirmed. If the note only says “rash” or “sun damage,” check documentation before assigning this code.
Do not use for
Do not use this code for other porokeratosis types, actinic keratosis, or nonspecific photodermatoses. If the record does not clearly identify DSAP, check documentation.
Coding tip
Code L56.5 only when DSAP is explicitly documented; do not infer it from lesion appearance alone.