ICD-10 Code L28.1 – Prurigo nodularis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L28.1 – Prurigo nodularis
What it is
Prurigo nodularis is a chronic skin condition marked by intensely itchy nodules. Use this code when documentation identifies prurigo nodularis or nodular prurigo.
Clinical signs
Typical findings include firm, excoriated, hyperkeratotic nodules from repeated scratching. Clinical features vary; refer to documentation if the note does not clearly describe the lesions.
When to use this code
Use L28.1 when the provider documents prurigo nodularis as the diagnosed skin disorder. It is appropriate for encounters focused on this chronic pruritic nodular eruption, even if the cause of itching is still being evaluated.
Code it when the record distinguishes prurigo nodularis from other pruritic rashes or dermatitis. If the note only says “itching” or “rash,” check documentation before assigning this code.
Do not use for
Do not use this code for nonspecific pruritus, eczema, or other itchy dermatoses unless prurigo nodularis is explicitly documented. Check documentation if the diagnosis is uncertain.
Coding tip
Assign the code only when the diagnosis is stated clearly in the assessment or problem list.