ICD-10 Guide

M33.21

Name: ICD-10-CM Medical Diagnosis Codes
Creator: Centers for Medicare & Medicaid Services
License: https://www.cms.gov/medicare/coding/icd10

Billable

Polymyositis with respiratory involvement

BILLABLE STATUSYes

IMPLEMENTATION DATEOctober 1, 2015

LAST UPDATED08/26/2025

Code Description

ICD-10 M33.21 is a billable code used to indicate a diagnosis of polymyositis with respiratory involvement.

Key Diagnostic Point:

Polymyositis with respiratory involvement

M33.21

Code Description

Key Diagnostic Point:

Related ICD-10 Codes

M33.21

Code Description

Key Diagnostic Point:

Related ICD-10 Codes