L90.9
ICD-10-CMThis code signifies a general thinning or wasting away of the skin layers due to an unknown cause. It indicates a non-specific atrophy of the skin, where the epidermis, dermis, or subcutaneous tissue has diminished in volume or substance. This can manifest as fragile, wrinkled, or translucent skin.
Use this code when documentation clearly states "atrophic disorder of skin" without further specification of the type or cause. It is appropriate when the provider has diagnosed skin atrophy but has not identified a more specific condition like anetoderma, atrophoderma of Pasini and Pierini, or striae atrophicae. Documentation must confirm the presence of skin atrophy without a more precise diagnosis.
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