ICD-10 K40.90
Billable / SpecificUnilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
About ICD-10-CM K40.90
ICD-10-CM code K40.90 represents Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent. This is a billable/specific code in the Digestive System chapter (block K40). The 2026 edition of ICD-10-CM K40.90 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under K40.90. Per CMS ICD-10-CM Tabular 2026.
- Inguinal hernia NOS
- Unilateral inguinal hernia NOS
Medicare LCD Coverage for K40.90
Local Coverage Determinations (LCDs) from CMS MACs that list K40.90 as a covered diagnosis.
Showing top 10 of 11 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K40.90.
2 Medicare
Convert K40.90 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| K40.90 | 55090 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To K40.90
Other codes in section K40-K46 (Hernia).
ICD-10 K40.90, Billing FAQ
Is ICD-10 code K40.90 billable? +
Yes, K40.90 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to K40.90? +
ICD-10 K40.90 includes: Inguinal hernia NOS; Unilateral inguinal hernia NOS.
What CPT codes are commonly billed with K40.90? +
Procedures frequently paired with K40.90 include: 76882, 76881.
What ICD-9 codes does K40.90 map to? +
Per CMS GEMs, K40.90 maps to ICD-9 codes: 55090. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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