ICD-10 K52.81
Billable / SpecificEosinophilic gastritis or gastroenteritis
About ICD-10-CM K52.81
ICD-10-CM code K52.81 represents Eosinophilic gastritis or gastroenteritis. This is a billable/specific code in the Digestive System chapter (block K52). The 2026 edition of ICD-10-CM K52.81 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under K52.81. Per CMS ICD-10-CM Tabular 2026.
- Eosinophilic enteritis
Type 2 Excludes
Not included here, the excluded code is not part of K52.81, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- eosinophilic esophagitis (K20.0)
Medicare LCD Coverage for K52.81
Local Coverage Determinations (LCDs) from CMS MACs that list K52.81 as a covered diagnosis.
Showing top 10 of 352 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K52.81.
5 Medicare
CPT Codes Commonly Billed with K52.81
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert K52.81 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 |
|---|---|---|
| K52.81 | 53570 | 10000 |
| K52.81 | 53571 | 10000 |
| K52.81 | 55841 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To K52.81
Other codes in section K50-K52 (Noninfective enteritis and colitis).
ICD-10 K52.81, Billing FAQ
Is ICD-10 code K52.81 billable? +
Yes, K52.81 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 K52.81? +
ICD-10 K52.81 includes: Eosinophilic enteritis.
What codes are Type 2 Excludes for K52.81? +
Type 2 Excludes (may be coded together when both conditions exist): eosinophilic esophagitis (K20.0)
What ICD-9 codes does K52.81 map to? +
Per CMS GEMs, K52.81 maps to ICD-9 codes: 53570, 53571, 55841. 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 July 16, 2026.
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