2026 ICD-10-CM Diagnosis Code I82.569Chronic embolism and thrombosis of unspecified calf muscular vein

ICD-10-CM Codes›I00–I99›I80-I89›I82

ICD-10-CM I82.569
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I82.569 is a billable ICD-10-CM diagnosis code for chronic embolism and thrombosis of unspecified calf muscular vein. 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 Chronic phlebitis; thrombophlebitis and thromboembolism.

Code Identity

ICD-10-CM Code
I82.569
Billable Status
Yes — Valid for Submission
Code Describes
Chronic embolism and thrombosis of unspecified calf muscular vein
Short Description
Chronic embolism and thombos unsp calf muscular vein
Parent Code
I82.56
Chronic embolism and thrombosis of calf muscular vein

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
CategoryI82Other venous embolism and thrombosis
This CodeI82.569Chronic embolism and thrombosis of unspecified calf muscular vein

Clinical ClassificationClinical

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

CCSR CIR034
Chronic phlebitis; thrombophlebitis and thromboembolism
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Deep Vein Thrombosis

Deep vein thrombosis, or DVT, is a blood clot that forms in a vein deep in the body. Most deep vein clots occur in the lower leg or thigh. If the vein swells, the condition is called thrombophlebitis. A deep vein thrombosis can break loose and cause a serious problem in the lung, called a pulmonary embolism.

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Code History & ChangesHistory

Replacement I82.569 replaces the following previously assigned code(s):

  • I82.599 - Chronic embolism and thombos of deep vein of unsp low extrm
FY 2020AddedAdded to the ICD-10-CM code setEffective October 1, 2019.
FY 2021–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I82.569Overview

Is I82.569 (Chronic embolism and thrombosis of calf muscular vein) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chronic embolism and thrombosis of unspecified calf muscular vein on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I82.569 group to?

When chronic embolism and thrombosis of unspecified calf muscular vein 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.

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.