Absence and agenesis of lacrimal apparatus

This code signifies the congenital absence or incomplete development (agenesis) of any part of the lacrimal apparatus, which includes the lacrimal gland, puncta, canaliculi, lacrimal sac, or nasolacrimal duct. This can result in conditions such as dry eye due to insufficient tear production or epiphora (excessive tearing) due to impaired tear drainage.

Apply this code when documentation clearly indicates a congenital malformation involving the lacrimal system, such as aplasia of the lacrimal gland or agenesis of the nasolacrimal duct. This code is appropriate for newborns or individuals diagnosed with these conditions at any age, provided the etiology is congenital.

• Differentiate from acquired lacrimal apparatus disorders, which would be coded elsewhere (e.g., H04 series).
• Ensure documentation specifies "absence" or "agenesis" and not merely a functional impairment without structural malformation.
• Consider laterality if specified (e.g., unilateral vs. bilateral absence), though this particular code does not offer laterality options.