I79
Disorders of arteries, arterioles and capillaries in diseases classified elsewhere
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
I79 is a non-billable ICD-10-CM code category for disorders of arteries, arterioles and capillaries in diseases classified elsewhere. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I79.0 Aneurysm of aorta in diseases classified elsewhere; I79.1 Aortitis in diseases classified elsewhere and I79.8 Other disorders of arteries, arterioles and capillaries in diseases classified elsewhere. Its coding notes include 10 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (10 notes)
Inherited from Chapter 9 Diseases of the circulatory system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)