ICD-10-CM 2026 · Effective October 1, 2025

ICD-10 R88

Non-Billable Header

Abnormal findings in other body fluids and substances

R88
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Synonyms
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LCDs
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Payer Policies
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Linked CPTs

About ICD-10-CM R88

ICD-10-CM code R88 represents Abnormal findings in other body fluids and substances. This is a non-billable header code in the Symptoms, Signs, and Abnormal Findings chapter (block R88). The 2026 edition of ICD-10-CM R88 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.

Medicare LCD Coverage for R88

Local Coverage Determinations (LCDs) from CMS MACs that list R88 as a covered diagnosis.

No Medicare LCDs reference R88 as covered

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 R88.

No commercial payer policies reference R88 on file

Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but R88 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.

CPT Codes Commonly Billed with R88

Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.

No procedure linkages on file for R88

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.

Codes Adjacent To R88

Other codes in section R83-R89 (Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis).

R83 Abnormal findings in cerebrospinal fluid (non-billable) R83.0 Abnormal level of enzymes in cerebrospinal fluid R83.1 Abnormal level of hormones in cerebrospinal fluid R83.2 Abnormal level of other drugs, medicaments and biological substances in cerebrospinal fluid R83.3 Abnormal level of substances chiefly nonmedicinal as to source in cerebrospinal fluid R83.4 Abnormal immunological findings in cerebrospinal fluid R83.5 Abnormal microbiological findings in cerebrospinal fluid R83.6 Abnormal cytological findings in cerebrospinal fluid R83.8 Other abnormal findings in cerebrospinal fluid R83.9 Unspecified abnormal finding in cerebrospinal fluid R84 Abnormal findings in specimens from respiratory organs and thorax (non-billable) R84.0 Abnormal level of enzymes in specimens from respiratory organs and thorax R84.1 Abnormal level of hormones in specimens from respiratory organs and thorax R84.2 Abnormal level of other drugs, medicaments and biological substances in specimens from respiratory organs and thorax R84.3 Abnormal level of substances chiefly nonmedicinal as to source in specimens from respiratory organs and thorax R84.4 Abnormal immunological findings in specimens from respiratory organs and thorax R84.5 Abnormal microbiological findings in specimens from respiratory organs and thorax R84.6 Abnormal cytological findings in specimens from respiratory organs and thorax R84.7 Abnormal histological findings in specimens from respiratory organs and thorax R84.8 Other abnormal findings in specimens from respiratory organs and thorax

ICD-10 R88, Billing FAQ

Is ICD-10 code R88 billable? +

No, R88 is a non-billable header code. Use a more specific child code from block R88 when submitting claims.

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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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