2026 ICD-10-CM Diagnosis Code I69.859Hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side

ICD-10-CM Codes›I00–I99›I60-I69›I69

ICD-10-CM I69.859
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I69.859 is a billable ICD-10-CM diagnosis code for hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is flagged as an unspecified code, since codes identifying laterality exist in the same family and exempt from POA reporting. Coders also document this condition as hemiplegia as late effect of cerebrovascular accident. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sequela of cerebral infarction and other cerebrovascular disease.

Code Identity

ICD-10-CM Code
I69.859
Billable Status
Yes — Valid for Submission
Code Describes
Hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side
Short Description
Hemiplga following oth cerebvasc disease affecting unsp side
Parent Code
I69.85
Hemiplegia and hemiparesis following other cerebrovascular disease

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI60-I69Cerebrovascular diseases
CategoryI69Sequelae of cerebrovascular disease
This CodeI69.859Hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side

Code EditsBilling

Medicare Code Editor checks that affect claim validity for I69.859.

Unspecified codes
Unspecified codes exist in the ICD-10-CM classification for circumstances when documentation in the medical record does not provide the level of detail needed to support reporting a more specific code. However, in the inpatient setting, there should generally be very limited and rare circumstances for which the laterality (right, left, bilateral) of a condition is unable to be documented and reported. The following pages contain the list of unspecified ICD-10-CM diagnosis codes for which there is a more specific code to identify laterality (right, left, bilateral) within that code family.

Present on Admission (POA)Billing

I69.859 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Hemiplegia as late effect of cerebrovascular accident
  • Hemiplegia of dominant side as late effect of cerebrovascular disease
  • Hemiplegia of dominant side due to and following embolic cerebrovascular accident
  • Paralytic syndrome of dominant side as late effect of stroke
  • Paralytic syndrome on one side of the body as late effect of cerebrovascular accident

Clinical ClassificationClinical

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

CCSR CIR025
Sequela of cerebral infarction and other cerebrovascular disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Brain Diseases

Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert I69.859 to ICD-9-CMHistory

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

ICD-9-CM
438.20 Late ef-hemplga side NOS
Approximate The match is approximate rather than exact.

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 I69.859Overview

Is I69.859 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is I69.859 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side on inpatient claims.

What is the ICD-9 equivalent of I69.859?

Under the General Equivalence Mappings, hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side converts to ICD-9-CM 438.20 (late ef-hemplga side NOS). The mapping is approximate, so confirm the match fits the documentation.

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.