Effusion of Knee ICD-10-CM Codes

What ICD-10 Codes are Used for Effusion of Knee?

Effusion of the knee, often referred to as "water on the knee," involves the accumulation of fluid in or around the knee joint. Accurate coding of knee effusion is pivotal for diagnostics, treatment, and medical billing. The ICD-10-CM provides standardized codes for this condition, enhancing the precision of medical communication.

Commonly Used ICD-10-CM Codes for Effusion of Knee:

M25.461 - Effusion, right knee

Accumulation of fluid in the right knee joint space or surrounding tissue.

M25.462 - Effusion, left knee

Accumulation of fluid in the left knee joint space or surrounding tissue.

M25.469 - Effusion, unspecified knee

Accumulation of fluid in the knee joint, but the affected side (left or right) is not specified.

Which Effusion of Knee ICD codes are Billable?

• M25.461 - Yes
• M25.462 - Yes
• M25.469 - Yes

Clinical Information

• Knee effusion occurs when excess fluid accumulates inside or around the knee joint.
• Various factors, including injury, arthritis, infection, or other medical conditions, can cause it.
• Symptoms often include swelling, pain, stiffness, and difficulty bending the knee.
• Diagnosis usually involves a physical examination, imaging tests such as X-rays or MRI, and sometimes joint fluid aspiration.
• Treatment often addresses the underlying cause and may involve draining the fluid, medications, physical therapy, or surgery.

Synonyms Include:

• Water on the knee
• Joint swelling of the knee
• Knee joint fluid accumulation
• Synovial fluid excess in the knee
• Knee hydrops