2027 ICD-10-CM Diagnosis Code S85.499SOther specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela

ICD-10-CM Codes›S00–T88›S80-S89›S85

ICD-10-CM S85.499S
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

S85.499S is a billable ICD-10-CM diagnosis code for other specified injury of lesser saphenous vein at lower leg level, unspecified leg, 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 2027 (October 1, 2026 through September 30, 2027) 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
S85.499S
Billable Status
Yes — Valid for Submission
Code Describes
Other specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela
Short Description
Inj less saphenous at lower leg level, unsp leg, sequela
Parent Code
S85.499
Other specified injury of lesser saphenous vein at lower leg level, unspecified leg

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS80-S89Injuries to the knee and lower leg
CategoryS85Injury of blood vessels at lower leg level
This CodeS85.499SOther specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela

Present on Admission (POA)Billing

S85.499S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Injuries to the knee and lower leg (S80-S89).

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Injury of blood vessels at lower leg level (S85). 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 S85.499S: its own notes plus those printed at S85, block S80-S89, 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 S85 Injury of blood vessels at lower leg level applies to 270 codes
  • injury of blood vessels at ankle and foot level (S95.-)
From Block S80-S89 Injuries to the knee and lower leg applies to 4,680 codes
  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
  • 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 S85 Injury of blood vessels at lower leg level applies to 270 codes
  • any associated open wound (S81.-)

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 S85 Injury of blood vessels at lower leg level applies to 270 codes
  • The appropriate 7th character is to be added to each code from category S85
Values for category S85 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela this code

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name S85.499S, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming S85.499S: its condition is not part of those codes, and both may be reported when the patient has both.

  • S75 Injury of blood vessels at hip and thigh level
    injury of blood vessels at lower leg level (S85.-) names S85.-, which includes this code

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

Leg Injuries and Disorders

Your legs are made up of bones, blood vessels, muscles, and other connective tissue. They are important for motion and standing. Playing sports, running, falling, or having an accident can damage your legs. Common leg injuries include sprains and strains, joint dislocations, and fractures (broken bones).

Read the full article at MedlinePlus

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

Convert S85.499S 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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S85.499SOverview

Is S85.499S a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character S in S85.499S mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the other specified injury of lesser saphenous vein at lower leg level, unspecified leg itself has resolved, not the original event.

What MS-DRG does S85.499S group to?

When other specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 301, 300, 299, with relative weights from 0.7132 to 1.5840 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S85.499S 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 lesser saphenous vein at lower leg level, unspecified leg, sequela on inpatient claims. The code appears in the Injuries to the knee and lower leg (S80-S89) range of the CMS exempt list.

What is the ICD-9 equivalent of S85.499S?

Under the General Equivalence Mappings, other specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela converts to ICD-9-CM 908.3 (late eff inj periph vess). The mapping is approximate, so confirm the match fits the documentation.