M36.4 – Arthropathy in hypersensitivity reactions classified elsewhere

ICD-10-CM 2027 diagnosis code · Systemic connective tissue disorders

Billable code

ICD-10-CM code M36.4

Code: M36.4 (claims format: M364)
Description: Arthropathy in hypersensitivity reactions classified elsewhere
Short description: Arthropathy in hypersensitivity reactions classd elswhr
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M30-M36 Systemic connective tissue disorders
Parent codes: M36

Notes for M36.4

Code first:

underlying disease, such as:
Henoch (-Schönlein) purpura (D69.0)
serum sickness (T80.6-)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M36 – Systemic disorders of connective tissue in diseases classified elsewhere

Excludes2 (not included here):

arthropathies in diseases classified elsewhere (M14.-)

Block M30-M36

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

Index terms for M36.4

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in M36

Frequently asked questions

What is ICD-10 code M36.4?

M36.4 is the ICD-10-CM code for arthropathy in hypersensitivity reactions classified elsewhere, in the block M30-M36 (Systemic connective tissue disorders).

Is M36.4 a billable code?

Yes. M36.4 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M36.4 belong to?

It belongs to category M36 – Systemic disorders of connective tissue in diseases classified elsewhere.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.