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Home/Diagnosis/ICD-10 Coding for Rheumatoid Factor

ICD-10 Coding for Rheumatoid Factor

M05.79
M06.9

Complete ICD-10-CM coding and documentation guide for icd-10 coding for rheumatoid factor includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
RF
Rheumatoid Arthritis Factor
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Key Information: ICD-10 Coding for Rheumatoid Factor

Essential facts and insights about ICD-10 Coding for Rheumatoid Factor

Use ICD-10 code M05.79 for rheumatoid arthritis with rheumatoid factor of multiple sites, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Rheumatoid arthritis with rheumatoid factor of multiple sites

Billable Code
M05.79
Billable

Diagnostic Criteria

clinical:
  • • Positive RF test and multiple joint involvement
documentation:
  • • Explicit mention of seropositive status and affected joints

Applicable To

  • • Seropositive rheumatoid arthritis

Important Notes

  • • Ensure RF status is documented and lab results are available to support the code.

Rheumatoid arthritis, unspecified

Billable Code
M06.9
Billable

Diagnostic Criteria

clinical:
  • • Clinical diagnosis of rheumatoid arthritis without specific serostatus

Applicable To

  • • Rheumatoid arthritis NOS

Important Notes

  • • Avoid using when more specific codes are applicable.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z79.899

Other long term (current) drug therapy

Use to indicate long-term use of DMARDs or biologics.

Frequently Asked Questions

What is the ICD-10 code for rheumatoid factor?

The ICD-10 code for rheumatoid arthritis with rheumatoid factor is M05.79, indicating seropositive RA with multiple joint involvement.

How do you code rheumatoid arthritis without rheumatoid factor?

Rheumatoid arthritis without rheumatoid factor is coded as M06.9, used when serostatus is negative or unspecified.

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