2027 ICD-10-CM Diagnosis Code S65.591DOther specified injury of blood vessel of left index finger, subsequent encounter

ICD-10-CM Codes›S00–T88›S60-S69›S65

ICD-10-CM S65.591D
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

S65.591D is a billable ICD-10-CM diagnosis code for other specified injury of blood vessel of left index finger, subsequent encounter. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury to blood vessels, subsequent encounter.

Code Identity

ICD-10-CM Code
S65.591D
Billable Status
Yes — Valid for Submission
Code Describes
Other specified injury of blood vessel of left index finger, subsequent encounter
Short Description
Oth injury of blood vessel of left index finger, subs encntr
Parent Code
S65.591
Other specified injury of blood vessel of left index 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 CodeS65.591DOther specified injury of blood vessel of left index finger, subsequent encounter

Present on Admission (POA)Billing

S65.591D is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Injuries to the wrist, hand and fingers (S60-S69).

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 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to S65.591D: its own notes plus those printed at S65, block S60-S69, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block S60-S69 Injuries to the wrist, hand and fingers applies to 5,118 codes
  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From S65 Injury of blood vessels at wrist and hand level applies to 279 codes
  • any associated open wound (S61.-)

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

From S65 Injury of blood vessels at wrist and hand level applies to 279 codes
  • The appropriate 7th character is to be added to each code from category S65
Values for category S65 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter this code
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name S65.591D, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming S65.591D: its condition is not part of those codes, and both may be reported when the patient has both.

  • S55 Injury of blood vessels at forearm level
    injury of blood vessels at wrist and hand level (S65.-) names S65.-, which includes this code

Clinical ClassificationClinical

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

CCSR INJ053
Injury to blood vessels, subsequent encounter
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 S65.591D to ICD-9-CMHistory

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

ICD-9-CM
V58.89 Other specfied aftercare
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S65.591DOverview

Is S65.591D (Other specified injury of blood vessel of left index finger) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified injury of blood vessel of left index finger, subsequent encounter on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character D in S65.591D mean?

The final character D marks a subsequent encounter: use it for routine care while the other specified injury of blood vessel of left index finger is healing, after active treatment has ended.

What MS-DRG does S65.591D group to?

When other specified injury of blood vessel of left index finger, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 950, 949, with relative weights from 0.7661 to 1.1231 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S65.591D 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 other specified injury of blood vessel of left index finger, subsequent encounter on inpatient claims. The code appears in the Injuries to the wrist, hand and fingers (S60-S69) range of the CMS exempt list.

What is the ICD-9 equivalent of S65.591D?

Under the General Equivalence Mappings, other specified injury of blood vessel of left index finger, subsequent encounter converts to ICD-9-CM V58.89 (other specfied aftercare). The mapping is approximate, so confirm the match fits the documentation.