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Home/Diagnosis/ICD-10 Coding for Carpometacarpal Arthritis

ICD-10 Coding for Carpometacarpal Arthritis

M18.12
M18.0

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

Also Known as:
CMC Arthritis
Basal Joint Arthritis
Thumb Arthritis
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Key Information: ICD-10 Coding for Carpometacarpal Arthritis

Essential facts and insights about ICD-10 Coding for Carpometacarpal Arthritis

Use ICD-10 code M18.12 for unilateral primary osteoarthritis, left hand, first carpometacarpal joint, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Unilateral primary osteoarthritis, left hand, first carpometacarpal joint

Billable Code
M18.12
Billable

Diagnostic Criteria

clinical:
  • • Presence of primary osteoarthritis signs in the left first CMC joint
documentation:
  • • Documented laterality and absence of trauma history

Applicable To

  • • Primary osteoarthritis of left first CMC joint

Important Notes

  • • Ensure laterality is documented to avoid unspecified codes.

Bilateral primary osteoarthritis of first carpometacarpal joints

Billable Code
M18.0
Billable

Applicable To

  • • Primary osteoarthritis of both first CMC joints

Important Notes

  • • Document bilateral involvement clearly.
Frequently Asked Questions

What is the ICD-10 code for carpometacarpal arthritis?

The ICD-10 code for unilateral primary osteoarthritis of the left hand's first carpometacarpal joint is M18.12.

How do you code bilateral CMC arthritis?

For bilateral primary osteoarthritis of the first carpometacarpal joints, use ICD-10 code M18.0.

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