M31.4

M31.4: Aortic arch syndrome [Takayasu]

Billable / specific codeICD-10-CM

M31.4 is a billable, specific ICD-10-CM code for aortic arch syndrome [takayasu]. It is valid for submission on a claim.

Check M31.4 with the rest of the claim: free scrubber

Other codes that can never be billed with M31.4

Their own Excludes1 notes name this code, so the conflict is not listed above.

I77.6Arteritis, unspecified

Risk adjustment

M31.4 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 93 Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic Disorders0.617 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. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

M31.4 is named in 26 Medicare coverage policies: 19 listing it as supporting medical necessity, and 7 listing it as NOT covered. Which one applies depends on your Medicare contractor.

A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
A58883Billing 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

Alphabetic index entries that lead here

Takayasu's disease or syndrome
Arteritis›aortic arch
Arteritis›brachiocephalic
Arteritis›young female aortic arch syndrome
Disease, diseased›pulseless
Syndrome›aortic›arch

Code history

Unchanged in every release from FY2024 to FY2027.