R76.81
Billable codeAbnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritis
The ICD-10 code for abnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritis is R76.81.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- rheumatoid arthritis with rheumatoid factor (M05.-)
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Abnormal anti-CCP
- Abnormal anti-cyclic citrullinated protein antibody and rheumatoid factor
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- R76.89Other specified abnormal immunological findings in serum
- R76.81Abnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritis
Associated MS-DRGs
R76.81 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.