ICD-10 R84.5
Billable / SpecificAbnormal microbiological findings in specimens from respiratory organs and thorax
About ICD-10-CM R84.5
ICD-10-CM code R84.5 represents Abnormal microbiological findings in specimens from respiratory organs and thorax. This is a billable/specific code in the Symptoms, Signs, and Abnormal Findings chapter (block R84). The 2026 edition of ICD-10-CM R84.5 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under R84.5. Per CMS ICD-10-CM Tabular 2026.
- Positive culture findings in specimens from respiratory organs and thorax
Type 1 Excludes
Pure excludes, these codes can never be coded together with R84.5. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- colonization status (Z22.-)
Medicare LCD Coverage for R84.5
Local Coverage Determinations (LCDs) from CMS MACs that list R84.5 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 R84.5.
1 Aetna
CPT Codes Commonly Billed with R84.5
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 R84.5 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 |
|---|---|---|
| R84.5 | 7929 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To R84.5
Other codes in section R83-R89 (Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis).
ICD-10 R84.5, Billing FAQ
Is ICD-10 code R84.5 billable? +
Yes, R84.5 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 R84.5? +
ICD-10 R84.5 includes: Positive culture findings in specimens from respiratory organs and thorax.
What codes are Type 1 Excludes for R84.5? +
Type 1 Excludes (never code together with R84.5): colonization status (Z22.-)
What ICD-9 codes does R84.5 map to? +
Per CMS GEMs, R84.5 maps to ICD-9 codes: 7929. 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 June 1, 2026.
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