531 Gastric ulcer (531.00-531.91) ICD-9-CM
The 531.00-531.91 block classified 531 gastric ulcer with 18 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 531.00-531.91 Block 18 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.
- 531.00 Ac stomach ulcer w hem
- 531.01 Ac stomac ulc w hem-obst
- 531.10 Ac stomach ulcer w perf
- 531.11 Ac stom ulc w perf-obst
- 531.20 Ac stomac ulc w hem/perf
- 531.21 Ac stom ulc hem/perf-obs
- 531.30 Acute stomach ulcer NOS
- 531.31 Ac stomach ulc NOS-obstr
- 531.40 Chr stomach ulc w hem
- 531.41 Chr stom ulc w hem-obstr
- 531.50 Chr stomach ulcer w perf
- 531.51 Chr stom ulc w perf-obst
- 531.60 Chr stomach ulc hem/perf
- 531.61 Chr stom ulc hem/perf-ob
- 531.70 Chr stomach ulcer NOS
- 531.71 Chr stomach ulc NOS-obst
- 531.90 Stomach ulcer NOS
- 531.91 Stomach ulcer NOS-obstr
Questions About This Page
Are the 531.00-531.91 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 531.00-531.91 block classify?
The block classified 531 gastric ulcer with 18 codes in the final ICD-9-CM release. It sat under Diseases of the digestive system (520–579) 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.
