ICD-10 Code H02.402 – Unspecified ptosis of left eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.402 – Unspecified ptosis of left eyelid
What it is
H02.402 identifies drooping of the left upper eyelid when the cause is not specified. Use it for unilateral left eyelid ptosis documented without a more precise etiology.
Clinical signs
Typical findings include a visibly low left upper lid that may partially cover the pupil. Clinical features vary; refer to documentation for whether levator weakness, nerve involvement, or mechanical causes are noted.
When to use this code
Use this code when the record clearly states left eyelid ptosis but does not identify the cause or a more specific subtype. It may appear in ophthalmology, neurology, or primary care notes. If documentation names a specific disorder, code that condition instead.
Do not use for
Do not use H02.402 when ptosis is specified as congenital, mechanical, neurogenic, myogenic, or due to another documented condition. Check documentation if the side is not left or if the eyelid droop is not confirmed.
Coding tip
Confirm laterality and whether the note says “unspecified” before assigning H02.402.