H46-H47 — Disorders of optic nerve and visual pathways
ICD-10-CM codes H46-H47 cover disorders of optic nerve and visual pathways, within diseases of the eye and adnexa. The block holds 122 codes across 2 categories, of which 92 are billable and 30 are header codes that cannot be submitted on a claim.
What else to watch in H46-H47
- 42 codes are laterality-specific. They come in left and right pairs, and the pair is mutually exclusive on a single site: coding both without a bilateral code is a contradiction a scrubber should catch before the payer does.
- 92 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.