Chloasma of left eye, unspecified eyelid and periocular area

This code describes a hyperpigmentation disorder, specifically chloasma (melasma), affecting the skin of the left eye's periocular region and an unspecified eyelid. Chloasma presents as irregular, often symmetric, brown patches, typically exacerbated by sun exposure or hormonal changes.

Use this code when documentation specifies chloasma or melasma located on the left eyelid or the surrounding periocular area. This diagnosis is often made clinically based on the characteristic appearance of the skin lesions.

• Ensure documentation specifies "chloasma" or "melasma" and clearly indicates the left eye/periocular area.
• Distinguish from other hyperpigmentation disorders like nevus or post-inflammatory hyperpigmentation.
• If the specific eyelid (upper or lower) is documented, a more specific code within H02.71- may be available.