ICD-10 B64
Billable / SpecificUnspecified protozoal disease
About ICD-10-CM B64
ICD-10-CM code B64 represents Unspecified protozoal disease. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block B64). The 2026 edition of ICD-10-CM B64 became effective on October 1, 2025.
Medicare LCD Coverage for B64
Local Coverage Determinations (LCDs) from CMS MACs that list B64 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B64.
1 Cigna
CPT Codes Commonly Billed with B64
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 B64 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 |
|---|---|---|
| B64 | 0889 | 10000 |
| B64 | 1369 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To B64
Other codes in section B50-B64 (Protozoal diseases).
ICD-10 B64, Billing FAQ
Is ICD-10 code B64 billable? +
Yes, B64 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What ICD-9 codes does B64 map to? +
Per CMS GEMs, B64 maps to ICD-9 codes: 0889, 1369. 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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