091 Early syphilis, symptomatic (091.0-091.9) ICD-9-CM
The 091.0-091.9 block classified 091 early syphilis, symptomatic with 16 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 091.0-091.9 Block 16 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.
- 091.0 Primary genital syphilis
- 091.1 Primary anal syphilis
- 091.2 Primary syphilis NEC
- 091.3 Secondary syph skin
- 091.4 Syphilitic adenopathy
- 091.50 Syphilitic uveitis NOS
- 091.51 Syphilit chorioretinitis
- 091.52 Syphilitic iridocyclitis
- 091.61 Syphilitic periostitis
- 091.62 Syphilitic hepatitis
- 091.69 Second syph viscera NEC
- 091.7 Second syphilis relapse
- 091.81 Acute syphil meningitis
- 091.82 Syphilitic alopecia
- 091.89 Secondary syphilis NEC
- 091.9 Secondary syphilis NOS
Questions About This Page
Are the 091.0-091.9 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 091.0-091.9 block classify?
The block classified 091 early syphilis, symptomatic with 16 codes in the final ICD-9-CM release. It sat under Infectious and parasitic diseases (001–139) 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.
