2026 ICD-10-CM Diagnosis Code I77.1Stricture of artery

ICD-10-CM Codes›I00–I99›I70-I79›I77

ICD-10-CM I77.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I77.1 is a billable ICD-10-CM diagnosis code for stricture of artery. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 299 through 301. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified circulatory disease.

Code Identity

ICD-10-CM Code
I77.1
Billable Status
Yes — Valid for Submission
Code Describes
Stricture of artery
Short Description
Stricture of artery
Same as the full description in the CMS dataset.
Parent Code
I77
Other disorders of arteries and arterioles

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI70-I79Diseases of arteries, arterioles and capillaries
CategoryI77Other disorders of arteries and arterioles
This CodeI77.1Stricture of artery

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired stenosis of common arterial trunk following procedure
  • Acquired tortuosity of branch of aortic arch
  • Arterial insufficiency
  • Arterial thoracic outlet syndrome
  • Arterial thoracic outlet syndrome of left subclavian artery
  • Arterial thoracic outlet syndrome of right subclavian artery
  • Asymptomatic stenosis of extracranial artery
  • Common iliac artery stenosis
  • Compression of transplanted artery
  • Dermatosis resulting from arterial insufficiency
  • External iliac artery endofibrosis
  • External iliac artery stenosis
  • Extrinsic compression of artery
  • Gangrene due to arterial insufficiency
  • Hepatic artery stenosis
  • Iliac artery stenosis
  • Kinking of transplanted artery
  • Left external iliac artery stenosis
  • Left iliac artery stenosis
  • Left thoracic outlet syndrome
  • Occlusion of artery of upper extremity
  • Occlusion of distal artery of left upper limb
  • Occlusion of distal artery of right upper limb
  • Occlusion of left popliteal artery
  • Occlusion of right popliteal artery
  • Popliteal artery occlusion
  • Recoarctation of aorta following procedure
  • Right external iliac artery stenosis
  • Right iliac artery stenosis
  • Right thoracic outlet syndrome
  • Stenosis of abdominal aorta
  • Stenosis of artery
  • Stenosis of brachiocephalic artery
  • Stenosis of retinal artery
  • Stenosis of thoracic aorta
  • Stenosis of transplant artery
  • Stricture of aorta
  • Stricture of artery
  • Tortuosity of branch of aortic arch
  • Tortuosity of systemic artery
  • Tortuous coronary artery
  • Vascular thoracic outlet syndrome

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Narrowing of artery

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Compression
      • artery
    • Disease, diseased
      • arterial
        • occlusive
          • due to stricture or stenosis
    • Disease, diseased
      • obliterative vascular
    • Disease, diseased
      • vascular
        • obliterative
    • Insufficiency, insufficient
      • arterial
    • Kink, kinking
      • artery
    • Narrowing
      • artery
    • Obliteration
      • artery
    • Obliteration
      • disease, arteriolar
    • Occlusion, occluded
      • artery
        • lower extremities due to stenosis or stricture
    • Occlusion, occluded
      • peripheral arteries
        • due to stricture or stenosis
    • Stenosis, stenotic(cicatricial)
      • artery NEC
    • Stricture
      • artery
    • Torsion
      • aorta, acquired
    • Tortuous
      • artery

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR032
Other specified and unspecified circulatory disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Arterial Insufficiency

    a condition in which there is inadequate blood flow through an artery.

Convert I77.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
447.1 Stricture of artery
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I77.1Overview

Is I77.1 (Other disorders of arteries and arterioles) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report stricture of artery on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I77.1 group to?

When stricture of artery is the principal diagnosis on an inpatient stay, it groups to MS-DRG 299, 300, 301, with relative weights from 0.7197 to 1.6327 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of I77.1?

Under the General Equivalence Mappings, stricture of artery converts to ICD-9-CM 447.1 (stricture of artery). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.