Summary & Overview
ICD-10-CM Code For Polyarteritis Nodosa And Related Conditions: Group Overview
The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group M30 includes medium-vessel vasculitides such as polyarteritis nodosa and related systemic necrotizing vasculitides that affect arteries supplying skin, nerves, kidneys, and other organs. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving vascular inflammation, organ ischemia, and complications that capture disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM M30 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.
ICD-10-CM M30: Polyarteritis Nodosa And Related Conditions Overview
The diagnoses in this group represent medium-vessel vasculitides, including polyarteritis nodosa and related systemic necrotizing vasculitides that can affect multiple organ systems such as skin, peripheral nerves, kidneys, and gastrointestinal tract. These conditions target the vascular system with inflammatory injury to arterial walls leading to ischemia and organ dysfunction. Accurate coding matters because it documents disease severity and organ involvement, which informs clinical records and supports appropriate claims processing and reimbursement.
Typical Clinical Scenarios
- A middle-aged patient presents to the emergency department with acute onset of fever, severe abdominal pain, and signs of intestinal ischemia (bloody diarrhea, guarding). Laboratory tests show elevated inflammatory markers and angiography demonstrates segmental aneurysms and stenoses of medium-sized mesenteric arteries consistent with a necrotizing vasculitis; a biopsy of an affected arterial segment confirms transmural inflammation without granulomas. A diagnosis from this group is assigned to capture the acute systemic necrotizing vasculitis affecting medium-sized vessels. Typical codes:
M300,M308 - A young adult with months of recurrent livedo reticularis, peripheral neuropathy (foot drop), weight loss, and low-grade fevers presents to rheumatology for evaluation of a chronic multisystem vasculitic process. Nerve and skin biopsies reveal chronic vasculitis of medium-sized arteries, and serial imaging documents waxing and waning arterial aneurysms; the patient is managed long-term for a systemic connective tissue vasculitis. A diagnosis from this group is assigned to represent the chronic, non-acute form of medium-vessel vasculitis. Typical codes:
M301,M302 - An older patient with known systemic medium-vessel vasculitis develops sudden severe hypertension and rapidly declining renal function; renal angiography shows infarcts from segmental arterial occlusions and the clinician documents renal involvement as a complication of the primary vasculitic disease. A diagnosis from this group is assigned to indicate the vasculitis with organ-specific complication (renal involvement) requiring focused management and coding. Typical codes:
M303,M308