ICD-10 code for Lentigo

The ICD-10-CM code for Lentigo is L81.4 (Other melanin hyperpigmentation).

Within L81, choose L81.4 (Other melanin hyperpigmentation) only when documentation doesn't support a more specific option: postinflammatory hyperpigmentation (L81.0), Chloasma (L81.1), Freckles (L81.2), cafe au lait spots (L81.3), Leukoderma, not elsewhere classified (L81.5), other disorders of diminished melanin formation (L81.6), pigmented purpuric dermatosis (L81.7), other specified disorders of pigmentation (L81.8) and 1 more.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728), DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772) and DRG 795 (Normal Newborn, relative weight 0.2022), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.