M05.06 Felty's syndrome, knee

Non-billable header with 3 child codes.

Applies from M05 Rheumatoid arthritis with rheumatoid factor

Excludes1 (never code together)

• rheumatic fever (I00)
• juvenile rheumatoid arthritis (M08.-)
• rheumatoid arthritis of spine (M45.-)

Applies from M05.0 Felty's syndrome

Applicable to

• Rheumatoid arthritis with splenoadenomegaly and leukopenia

Codes under M05.06

• M05.061 Felty's syndrome, right knee
• M05.062 Felty's syndrome, left knee
• M05.069 Felty's syndrome, unspecified knee

Code annotations containing back-references to M05.06

Back-references to M05.0

• Type 1 Excludes: M08 Juvenile arthritis ("Felty's syndrome (M05.0)")

Back-references to M05

• Code Also: I27.21 Secondary pulmonary arterial hypertension ("rheumatoid arthritis (M05.-)")
• Type 1 Excludes: R76.81 Abnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritis ("rheumatoid arthritis with rheumatoid factor (M05.-)")

Diagnosis Index entries for M05.06

• Felty's syndrome › knee

Nearby codes

• M05.049 Felty's syndrome, unspecified hand
• M05.05 Felty's syndrome, hip
• M05.051 Felty's syndrome, right hip
• M05.052 Felty's syndrome, left hip
• M05.059 Felty's syndrome, unspecified hip
• M05.06 Felty's syndrome, knee (this code)
• M05.061 Felty's syndrome, right knee
• M05.062 Felty's syndrome, left knee
• M05.069 Felty's syndrome, unspecified knee
• M05.07 Felty's syndrome, ankle and foot
• M05.071 Felty's syndrome, right ankle and foot