M31.10 is the authoritative medical code for Thrombotic microangiopathy, unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for thrombotic microangiopathy, unspecified (ICD-10-CM M31.10), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Thrombotic microangiopathy, unspecified is a billable ICD-10-CM diagnosis code M31.10. Includes: autoimmune disease NOS; collagen vascular disease NOS; systemic autoimmune disease; systemic collagen vascular disease. Excludes1 (not coded here): autoimmune disease, single organ or single cell-type -code to relevant condition category.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for M31.10 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- autoimmune disease NOS
- collagen vascular disease NOS
- systemic autoimmune disease
- systemic collagen vascular disease
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- autoimmune disease, single organ or single cell-type -code to relevant condition category
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with M31.10?
Per official ICD-10-CM Excludes1 instructions, M31.10 must not be reported together with: autoimmune disease, single organ or single cell-type -code to relevant condition category.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to M31.10 in its code family, with their registry titles.
- M31 — Other necrotizing vasculopathies
- M31.0 — Hypersensitivity angiitis
- M31.1 — Thrombotic microangiopathy
- M31.11 — Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]
- M31.19 — Other thrombotic microangiopathy
- M31.2 — Lethal midline granuloma
- M31.3 — Wegener's granulomatosis
- M31.30 — Wegener's granulomatosis without renal involvement
- M31.31 — Wegener's granulomatosis with renal involvement
- M31.4 — Aortic arch syndrome [Takayasu]
View all 15 codes in the M31 family
Indexed Clinical Terms (1)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Microangiopathy (peripheral), thrombotic