M31.7 - Microscopic polyangiitis
| ICD-10: | M31.7 |
| Short Description: | Microscopic polyangiitis |
| Long Description: | Microscopic polyangiitis |
| Status: | Valid for Submission |
| Version: | ICD-10-CM 2023 |
| Code Classification: |
M31.7 is a billable ICD-10 code used to specify a medical diagnosis of microscopic polyangiitis. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Antineutrophil cytoplasmic antibody positive
- Antineutrophil cytoplasmic antibody positive vasculitis
- Disorder of respiratory system due to microscopic polyangiitis
- Microscopic polyangiitis
- Necrosis of artery
- Necrosis of artery
- Polyarteritis
- Primary necrotizing systemic vasculitis
Clinical Information
- Microscopic Polyangiitis-. a primary systemic vasculitis of small- and some medium-sized vessels. it is characterized by a tropism for kidneys and lungs, positive association with anti-neutrophil cytoplasmic antibodies (anca), and a paucity of immunoglobulin deposits in vessel walls.
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:
Inclusion Terms
Inclusion TermsThese terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Microscopic polyarteritis
Type 1 Excludes
Type 1 ExcludesA type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- polyarteritis nodosa M30.0
Index to Diseases and Injuries References
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for this diagnosis code are found in the injuries and diseases index:
- - Disorder (of) - See Also: Disease;
- - glomerular (in) - N05.9
- - microscopic polyangiitis - M31.7
- - glomerular (in) - N05.9
- - Glomerulonephritis - See Also: Nephritis; - N05.9
- - in (due to)
- - microscopic polyangiitis - M31.7
- - in (due to)
- - Microscopic polyangiitis (polyarteritis) - M31.7
- - Polyangiitis - M30.0
- - microscopic - M31.7
- - Polyarteritis
- - microscopic - M31.7
- - Polyneuropathy (peripheral) - G62.9
- - in (due to)
- - microscopic polyangiitis - M31.7
- - in (due to)
Convert to ICD-9 Code
| Source ICD-10 Code | Target ICD-9 Code | |
|---|---|---|
| M31.7 | 446.0 - Polyarteritis nodosa | |
| Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code. | ||
Patient Education
Vasculitis
Vasculitis is an inflammation of the blood vessels. It happens when the body's immune system attacks the blood vessel by mistake. It can happen because of an infection, a medicine, or another disease. The cause is often unknown.
Vasculitis can affect arteries, veins and capillaries. Arteries are vessels that carry blood from the heart to the body's organs. Veins are the vessels that carry blood back to the heart. Capillaries are tiny blood vessels that connect the small arteries and veins.
When a blood vessel becomes inflamed, it can:
- Narrow, making it more difficult for blood to get through
- Close off completely so that blood can't get through
- Stretch and weaken so much that it bulges. The bulge is called an aneurysm. If it bursts, it can cause dangerous bleeding inside the body.
Symptoms of vasculitis can vary, but usually include fever, swelling and a general sense of feeling ill. The main goal of treatment is to stop the inflammation. Steroids and other medicines to stop inflammation are often helpful.
NIH: National Heart, Lung, and Blood Institute
[Learn More in MedlinePlus]
Code History
- 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 (First year ICD-10-CM implemented into the HIPAA code set)
