ICD-10-CM

M90.831: Osteopathy in diseases classified elsewhere, right forearm

A billable ICD-10-CM diagnosis code. Code first the underlying disease. A CDC title that says "in diseases classified elsewhere" marks a manifestation code: it names a problem caused by another disease. The CDC rules list that disease first and this code after it, never this code alone or first.

Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page

Kind
Billable code, listed after the underlying disease
Category
M90

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Nearby codes

A header groups codes and is not billed. A billable code is one you can report. Listed second marks a billable manifestation code (its CDC title says it is "classified elsewhere"): code the underlying disease or condition first, then this code.

It's the public CDC file. Check the current ICD-10-CM guidelines before you code.

CDC ICD-10-CM page

Code first

The CDC tabular list says to report the code named here before this one.

From M90.8. A note on a category applies to every code under it.

Code first underlying disease, such as:

Excludes1

Excludes1 means these codes are not reported together.

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