Is M31.7 a billable ICD-10-CM code?

Yes. M31.7 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does M31.7 sit in the tabular list?

Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Systemic connective tissue disorders (M30-M36).

What cannot be coded together with M31.7?

M31.7 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

M31.7

M31.7 — Microscopic polyangiitis

Billable / specific codeICD-10-CM

M31.7 is a billable, specific ICD-10-CM code for microscopic polyangiitis. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

polyarteritis nodosa (M30.0)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Microscopic polyarteritis

Other codes that can never be billed with M31.7

These codes carry an Excludes1 note pointing at M31.7. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M31.7 alone.

M30Polyarteritis nodosa and related conditions

Risk adjustment

M31.7 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 94 Systemic Lupus Erythematosus and Other Specified Systemic Connective Tissue Disorders0.268 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

M31.7 is named in 27 Medicare coverage policies — 21 listing it as supporting medical necessity, and 6 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
A59434Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered

How M31.7 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to M31.7.

Microscopic polyangiitis(polyarteritis)
Polyangiitis›microscopic
Polyarteritis›microscopic
Disorder›glomerular›microscopic polyangiitis
Glomerulonephritis›in›microscopic polyangiitis
Polyneuropathy›in›microscopic polyangiitis

Related codes at this level

Codes that share M31. If M31.7 is not quite right, the correct code is usually one of these.

Questions about M31.7

Is M31.7 a billable ICD-10-CM code?: Yes. M31.7 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does M31.7 sit in the tabular list?: Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Systemic connective tissue disorders (M30-M36).
What cannot be coded together with M31.7?: M31.7 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.