M02.30

HCC Category Mapping

What This Code Means

Reiter's disease, a type of reactive arthritis that causes joint inflammation, typically following an infection, affecting an unspecified body site.

Coding Tips

• •Reiter's disease is a triad of arthritis, urethritis, and conjunctivitis; document all components if present
• •Query provider for specific site involvement to assign more specific code if possible

Clinical Significance

Reiter's disease represents a classic triad of reactive arthritis typically involving joints, urethritis, and conjunctivitis, though this unspecified site code captures cases where the specific anatomical location is not documented. This condition requires ongoing management due to its chronic inflammatory nature and potential for recurrence and complications.

Documentation Requirements

• ✓Clinical diagnosis of Reiter's disease or reactive arthritis
• ✓History of preceding infection (often genitourinary or gastrointestinal)
• ✓Evidence of arthritis symptoms without specified anatomical site
• ✓Documentation of classic triad components when present
• ✓Chronic or recurrent nature of symptoms
• ✓Exclusion of other arthritis types
• ✓Laboratory or clinical findings supporting reactive arthritis diagnosis

Commonly Confused Codes