2026 ICD-10-CM Diagnosis Code S65.509SUnspecified injury of blood vessel of unspecified finger, sequela

ICD-10-CM Codes›S00–T88›S60-S69›S65

ICD-10-CM S65.509S
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S65.509S is a billable ICD-10-CM diagnosis code for unspecified injury of blood vessel of unspecified finger, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. 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. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.

Code Identity

ICD-10-CM Code
S65.509S
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified injury of blood vessel of unspecified finger, sequela
Short Description
Unsp injury of blood vessel of unspecified finger, sequela
Parent Code
S65.509
Unspecified injury of blood vessel of unspecified finger

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS60-S69Injuries to the wrist, hand and fingers
CategoryS65Injury of blood vessels at wrist and hand level
This CodeS65.509SUnspecified injury of blood vessel of unspecified finger, sequela

Present on Admission (POA)Billing

S65.509S 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.

  • Closed injury of digital artery of hand
  • Closed injury of digital vein of finger
  • Injury of blood vessel of finger
  • Injury of digital artery of hand
  • Injury of digital vein of finger
  • Injury of digital vessel of index finger
  • Injury of digital vessel of little finger
  • Injury of digital vessel of middle finger
  • Injury of digital vessel of ring finger
  • Left finger blood vessel injury
  • Open injury of digital artery of hand
  • Open injury of digital vein of finger
  • Right finger blood vessel injury

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Injury of blood vessels at wrist and hand level (S65). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Clinical ClassificationClinical

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

CCSR INJ073
Injury, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Finger Injuries and Disorders

You use your fingers and thumbs to do everything from grasping objects to playing musical instruments to typing. When there is something wrong with them, it can make life difficult. Common problems include:

Read the full article at MedlinePlus

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

Convert S65.509S to ICD-9-CMHistory

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

ICD-9-CM
908.3 Late eff inj periph vess
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 S65.509SOverview

Is S65.509S (Unspecified injury of blood vessel of unspecified finger) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of blood vessel of unspecified finger, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character S in S65.509S mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the unspecified injury of blood vessel of unspecified finger itself has resolved, not the original event.

What MS-DRG does S65.509S group to?

When unspecified injury of blood vessel of unspecified finger, sequela 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.

Is S65.509S 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 unspecified injury of blood vessel of unspecified finger, sequela on inpatient claims.

What is the ICD-9 equivalent of S65.509S?

Under the General Equivalence Mappings, unspecified injury of blood vessel of unspecified finger, sequela converts to ICD-9-CM 908.3 (late eff inj periph vess). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.