550 Inguinal hernia (550.00-550.93) ICD-9-CM
The 550.00-550.93 block classified 550 inguinal hernia with 12 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 550.00-550.93 Block 12 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.
- 550.00 Unilat ing hernia w gang
- 550.01 Recur unil ing hern-gang
- 550.02 Bilat ing hernia w gang
- 550.03 Recur bil ing hern-gang
- 550.10 Unilat ing hernia w obst
- 550.11 Recur unil ing hern-obst
- 550.12 Bilat ing hernia w obst
- 550.13 Recur bil ing hern-obstr
- 550.90 Unilat inguinal hernia
- 550.91 Recur unilat inguin hern
- 550.92 Bilat inguinal hernia
- 550.93 Recur bilat inguin hern
Questions About This Page
Are the 550.00-550.93 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 550.00-550.93 block classify?
The block classified 550 inguinal hernia with 12 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.
