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Home/Diagnosis/ICD-10 Coding for Knee Effusion

ICD-10 Coding for Knee Effusion

M25.461
M25.462
M25.469

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

Also Known as:
Water on the Knee
Knee Swelling
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Key Information: ICD-10 Coding for Knee Effusion

Essential facts and insights about ICD-10 Coding for Knee Effusion

Use ICD-10 code M25.461 for effusion, right knee, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Effusion, right knee

Billable Code
M25.461
Billable

Diagnostic Criteria

clinical:
  • • Effusion confirmed by imaging or physical exam
documentation:
  • • Document laterality and cause if known

Applicable To

  • • Right knee swelling

Important Notes

  • • Ensure laterality is documented to avoid unspecified codes.

Effusion, left knee

Billable Code
M25.462
Billable

Diagnostic Criteria

clinical:
  • • Effusion confirmed by imaging or physical exam
documentation:
  • • Document laterality and cause if known

Applicable To

  • • Left knee swelling

Important Notes

  • • Ensure laterality is documented to avoid unspecified codes.

Effusion, unspecified knee

Billable Code
M25.469
Billable

Diagnostic Criteria

clinical:
  • • Effusion confirmed by imaging or physical exam
documentation:
  • • Document laterality and cause if known

Applicable To

  • • Knee swelling NOS

Important Notes

  • • Avoid use if laterality is known.
Ancillary Codes

Additional codes that may be used with this diagnosis

S83.2--

Tear of meniscus, current injury

Use when effusion is due to a meniscus tear.

Frequently Asked Questions

What is the ICD-10 code for knee effusion?

The ICD-10 codes for knee effusion are M25.461 for the right knee, M25.462 for the left knee, and M25.469 for unspecified knee.

How do you document knee effusion?

Document knee effusion by specifying laterality, cause, and confirming with imaging or aspiration results.

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