551 Other hernia of abdominal cavity, with gangrene (551.00-551.9) ICD-9-CM
The 551.00-551.9 block classified 551 other hernia of abdominal cavity, with gangrene with 11 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 551.00-551.9 Block 11 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.
- 551.00 Unil femoral hern w gang
- 551.01 Rec unil fem hern w gang
- 551.02 Bilat fem hern w gang
- 551.03 Recur bil fem hern-gang
- 551.1 Umbilical hernia w gangr
- 551.20 Gangr ventral hernia NOS
- 551.21 Gangr incisional hernia
- 551.29 Gang ventral hernia NEC
- 551.3 Diaphragm hernia w gangr
- 551.8 Hernia, site NEC w gangr
- 551.9 Hernia, site NOS w gangr
Questions About This Page
Are the 551.00-551.9 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 551.00-551.9 block classify?
The block classified 551 other hernia of abdominal cavity, with gangrene with 11 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.
