M13 Header — not billable

Other arthritis

Other arthritis

M13 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.

Billable codes in this category

Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.

M13.0
Polyarthritis, unspecified

Arthritis affecting five or more joints simultaneously, where the underlying cause has not been identified or documented with sufficient specificity to assign a more precise code.

Inclusion & exclusion notes

Excludes 1 (mutually exclusive — never code together)

  • arthrosis (M15-M19)
  • osteoarthritis (M15-M19)

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