2026 ICD-10-CM Diagnosis Code S90.929SUnspecified superficial injury of unspecified foot, sequela

ICD-10-CM Codes›S00–T88›S90-S99›S90

ICD-10-CM S90.929S
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S90.929S is a billable ICD-10-CM diagnosis code for unspecified superficial injury of unspecified foot, 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 604 through 605. 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
S90.929S
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified superficial injury of unspecified foot, sequela
Short Description
Unspecified superficial injury of unspecified foot, sequela
Same as the full description in the CMS dataset.
Parent Code
S90.929
Unspecified superficial injury of unspecified foot

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS90-S99Injuries to the ankle and foot
CategoryS90Superficial injury of ankle, foot and toes
This CodeS90.929SUnspecified superficial injury of unspecified foot, sequela

Present on Admission (POA)Billing

S90.929S 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.

  • Multiple injuries of ankle
  • Multiple injuries of foot
  • Multiple injuries of free lower limb
  • Multiple superficial injuries of ankle
  • Multiple superficial injuries of ankle and foot
  • Multiple superficial injuries of foot
  • Superficial injury of dorsum of foot
  • Superficial injury of foot
  • Superficial injury of foot and toe
  • Superficial injury of foot with infection
  • Superficial injury of foot without infection
  • Superficial injury of heel
  • Superficial injury of sole of foot

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Superficial injury of ankle, foot and toes (S90). 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

Wounds and Injuries

An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening.

Read the full article at MedlinePlus

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

Convert S90.929S to ICD-9-CMHistory

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

ICD-9-CM
906.2 Late eff superficial inj
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 S90.929SOverview

Is S90.929S (Unspecified superficial injury of unspecified foot) a billable code?

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

What does the 7th character S in S90.929S mean?

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

What MS-DRG does S90.929S group to?

When unspecified superficial injury of unspecified foot, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 604, 605, with relative weights from 0.9160 to 1.4721 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S90.929S 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 superficial injury of unspecified foot, sequela on inpatient claims.

What is the ICD-9 equivalent of S90.929S?

Under the General Equivalence Mappings, unspecified superficial injury of unspecified foot, sequela converts to ICD-9-CM 906.2 (late eff superficial inj). 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.