370 Keratitis (370.00-370.9) ICD-9-CM
The 370.00-370.9 block classified 370 keratitis with 33 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 370.00-370.9 Block 33 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.
- 370.00 Corneal ulcer NOS
- 370.01 Marginal corneal ulcer
- 370.02 Ring corneal ulcer
- 370.03 Central corneal ulcer
- 370.04 Hypopyon ulcer
- 370.05 Mycotic corneal ulcer
- 370.06 Perforated corneal ulcer
- 370.07 Mooren's ulcer
- 370.20 Superfic keratitis NOS
- 370.21 Punctate keratitis
- 370.22 Macular keratitis
- 370.23 Filamentary keratitis
- 370.24 Photokeratitis
- 370.31 Phlycten keratoconjunct
- 370.32 Limbar keratoconjunctiv
- 370.33 Keratoconjunctivit sicca
- 370.34 Expsure keratoconjunctiv
- 370.35 Neurotroph keratoconjunc
- 370.40 Keratoconjunctivitis NOS
- 370.44 Keratitis in exanthema
- 370.49 Keratoconjunctivitis NEC
- 370.50 Interstit keratitis NOS
- 370.52 Diffus interstit keratit
- 370.54 Sclerosing keratitis
- 370.55 Corneal abscess
- 370.59 Interstit keratitis NEC
- 370.60 Cornea neovasculariz NOS
- 370.61 Local vasculariza cornea
- 370.62 Corneal pannus
- 370.63 Deep vasculariza cornea
- 370.64 Corneal ghost vessels
- 370.8 Keratitis NEC
- 370.9 Keratitis NOS
Questions About This Page
Are the 370.00-370.9 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 370.00-370.9 block classify?
The block classified 370 keratitis with 33 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.
