R76.9
Billable codeAbnormal immunological finding in serum, unspecified
The ICD-10 code for abnormal immunological finding in serum, unspecified is R76.9.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- R76.0Raised antibody titer
- R76.1Nonspecific reaction to test for tuberculosisnon-billable header
- R76.8Other specified abnormal immunological findings in serumnon-billable header
- R76.9Abnormal immunological finding in serum, unspecified
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 79579Approximate match
Associated MS-DRGs
R76.9 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.