ICD Code M25.461

ICD code M25.461 is effusion of the right knee, which means there is an abnormal accumulation of fluid in the right knee joint.

1. Presence of swelling in the right knee joint

2. Evidence of excess fluid accumulation within the right knee, confirmed by physical examination or imaging

3. Patient reports pain, stiffness, or decreased range of motion in the right knee

4. Absence of trauma or injury as the primary cause, unless specified as non-traumatic

5. No evidence of infection or other specific underlying systemic disease causing the effusion

6. Symptoms persist beyond transient or minor swelling

7. Clinical documentation supports a diagnosis of joint effusion in the right knee

Relevant CPT codes for ICD code M25.461 include:

- 20610 (Arthrocentesis, aspiration and/or injection; major joint or bursa, without ultrasound guidance)

- 20611 (Arthrocentesis, aspiration and/or injection; major joint or bursa, with ultrasound guidance)

- 29870 (Arthroscopy, knee, diagnostic, with or without synovial biopsy)

- 29871 (Arthroscopy, knee, surgical; for infection, lavage and drainage)

- 27369 (Injection procedure for contrast knee arthrography)

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