I77.9
Disorder of arteries and arterioles, unspecified
BillableComplete code, valid to report
I77.9 (also written I779) is a billable ICD-10-CM diagnosis code for disorder of arteries and arterioles, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 23 codes in category I77 (Other disorders of arteries and arterioles). The Alphabetic Index lists it under 6 entries. Its coding notes include 13 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Inherited from I77 Other disorders of arteries and arterioles
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.-)
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 6 entries