Chloasma of right upper eyelid and periocular area

This code describes a hyperpigmentation disorder characterized by brown or grayish patches, specifically affecting the right upper eyelid and the skin surrounding the right eye. It is a form of melasma, often triggered by hormonal changes, sun exposure, or certain medications.

Use this code when documentation clearly indicates chloasma or melasma localized to the right upper eyelid and the adjacent periocular region. Supporting documentation should specify the laterality and exact anatomical location of the hyperpigmentation.

• Ensure the documentation specifies "right" upper eyelid and periocular area; do not use for bilateral or left-sided involvement.
• Distinguish from other forms of hyperpigmentation, such as freckles or post-inflammatory hyperpigmentation.
• Consider additional codes for underlying conditions contributing to chloasma, if documented.