Alphabetic Index FY2027

I77.7

Other arterial dissection

FY2027Chapter 9: Diseases of the circulatory system/I70–I79 Diseases of arteries, arterioles and capillaries

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

I77.7 is a non-billable ICD-10-CM code header for other arterial dissection. 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 I77.70 Dissection of unspecified artery, I77.71 Dissection of carotid artery, I77.72 Dissection of iliac artery, I77.73 Dissection of renal artery and 5 more. Its coding notes include 15 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

This code
  • dissection of aorta (I71.0-)
  • dissection of coronary artery (I25.42)
Inherited from I77 Other disorders of arteries and arterioles
  • collagen (vascular) diseases (M30-M36)
  • hypersensitivity angiitis (M31.0)
  • pulmonary artery (I28.-)
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.-)

More specific codes under I77.7 9