Chloasma

This code describes hyperpigmentation of the skin, typically presenting as irregular, light to dark brown patches on sun-exposed areas, most commonly the face. It is often associated with hormonal changes, such as those occurring during pregnancy (melasma gravidarum) or with the use of oral contraceptives.

Use this code for documented cases of chloasma or melasma, regardless of the underlying cause. Documentation should clearly state the diagnosis of chloasma or melasma, often noting the location of the hyperpigmentation.

• Differentiate from other forms of hyperpigmentation; this code is specific to chloasma/melasma.
• Do not use for freckles (L81.2) or post-inflammatory hyperpigmentation (L81.6).
• If the chloasma is due to a specific drug, consider an additional code for the adverse effect of the drug.