Hypertrophic disorder of the skin, unspecified

This code signifies an abnormal overgrowth or thickening of the skin tissue, where the specific type or cause of the hypertrophy has not been identified or documented. It represents a general diagnosis for skin thickening without further diagnostic specificity.

Use this code when documentation indicates a hypertrophic skin condition, but the provider has not specified the exact nature (e.g., hypertrophic scar, keloid, lichen simplex chronicus) or the underlying etiology. This is typically a provisional or less specific diagnosis used when further investigation or clarification is pending.

• Avoid using this code if a more specific diagnosis for skin hypertrophy (e.g., L91.0 for hypertrophic scar, L91.8 for other hypertrophic disorders) is documented.
• Query the provider for greater specificity if possible, as an unspecified code may impact reimbursement or quality metrics.
• This code should be used as a last resort when no other specific hypertrophic skin disorder can be assigned.