1. Home
  2. ICD-10-CM Codes
  3. M00–M99
  4. M30-M36
  5. M31
  6. 2026 ICD-10-CM Code M31

2026 ICD-10-CM Diagnosis Code M31

Other necrotizing vasculopathies

ICD-10-CM Code:
M31
ICD-10 Code for:
Other necrotizing vasculopathies
Is Billable?
Not Valid for Submission
Code Navigator:

M31 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity from the list below for a diagnosis of other necrotizing vasculopathies. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Other necrotizing vasculopathies

Non-specific codes like M31 require more digits to indicate the appropriate level of specificity. Consider using any of the following billable codes with a higher level of specificity when coding for other necrotizing vasculopathies:

  • Use M31.0 for Hypersensitivity angiitis

  • M31.1 for Thrombotic microangiopathy

  • Use M31.10 for Thrombotic microangiopathy, unspecified

  • Use M31.11 for Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]

  • Use M31.19 for Other thrombotic microangiopathy

  • Use M31.2 for Lethal midline granuloma

  • M31.3 for Wegener's granulomatosis

  • Use M31.30 for Wegener's granulomatosis without renal involvement

  • Use M31.31 for Wegener's granulomatosis with renal involvement

  • Use M31.4 for Aortic arch syndrome [Takayasu]

  • Use M31.5 for Giant cell arteritis with polymyalgia rheumatica

  • Use M31.6 for Other giant cell arteritis

  • Use M31.7 for Microscopic polyangiitis

  • Use M31.8 for Other specified necrotizing vasculopathies

  • Use M31.9 for Necrotizing vasculopathy, unspecified

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    M00–M99
    • Systemic connective tissue disorders
      M30-M36
      • Other necrotizing vasculopathies
        M31

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
  • FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.