377 Disorders of optic nerve and visual pathways (377.00-377.9) ICD-9-CM
The 377.00-377.9 block classified 377 disorders of optic nerve and visual pathways with 38 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Legacy Codes in the 377.00-377.9 Block 38 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 377.00 Papilledema NOS
- 377.01 Papilledema w incr press
- 377.02 Papilledema w decr press
- 377.03 Papilledema w retina dis
- 377.04 Foster-kennedy syndrome
- 377.10 Optic atrophy NOS
- 377.11 Primary optic atrophy
- 377.12 Postinflam optic atrophy
- 377.13 Optic atrph w retin dyst
- 377.14 Cupping of optic disc
- 377.15 Partial optic atrophy
- 377.16 Hereditary optic atrophy
- 377.21 Drusen of optic disc
- 377.22 Crater-like hole op disc
- 377.23 Coloboma of optic disc
- 377.24 Pseudopapilledema
- 377.30 Optic neuritis NOS
- 377.31 Optic papillitis
- 377.32 Retrobulbar neuritis
- 377.33 Nutrition optc neuropthy
- 377.34 Toxic optic neuropathy
- 377.39 Optic neuritis NEC
- 377.41 Ischemic optic neuropthy
- 377.42 Optic nerve sheath hemor
- 377.43 Optic nerve hypoplasia
- 377.49 Optic nerve disorder NEC
- 377.51 Opt chiasm w pituit dis
- 377.52 Opt chiasm dis/neopl NEC
- 377.53 Opt chiasm w vascul dis
- 377.54 Op chiasm dis w infl dis
- 377.61 Vis path dis w neoplasms
- 377.62 Vis path dis w vasc dis
- 377.63 Vis path dis w infl dis
- 377.71 Vis cortx dis w neoplasm
- 377.72 Vis cortx dis w vasc dis
- 377.73 Vis cortex dis w inflam
- 377.75 Cortical blindness
- 377.9 Optic nerve disorder NOS
Questions About This Page
Are the 377.00-377.9 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 377.00-377.9 block classify?
The block classified 377 disorders of optic nerve and visual pathways with 38 codes in the final ICD-9-CM release. It sat under Diseases of the sense organs (360–389) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
