2026 ICD-10-CM Diagnosis Code S51.009SUnspecified open wound of unspecified elbow, sequela

ICD-10-CM Codes›S00–T88›S50-S59›S51

ICD-10-CM S51.009S
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S51.009S is a billable ICD-10-CM diagnosis code for unspecified open wound of unspecified elbow, 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
S51.009S
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified open wound of unspecified elbow, sequela
Short Description
Unspecified open wound of unspecified elbow, sequela
Same as the full description in the CMS dataset.
Parent Code
S51.009
Unspecified open wound of unspecified elbow

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS50-S59Injuries to the elbow and forearm
CategoryS51Open wound of elbow and forearm
This CodeS51.009SUnspecified open wound of unspecified elbow, sequela

Present on Admission (POA)Billing

S51.009S 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.

  • Crushing injury of elbow
  • Fracture subluxation of elbow joint
  • Glass in elbow
  • Open crush injury, elbow area
  • Open division elbow ligament
  • Open division elbow, lateral collateral ligament
  • Open division elbow, medial collateral ligament
  • Open fracture dislocation elbow joint
  • Open fracture dislocation superior radioulnar joint
  • Open fracture subluxation of elbow joint
  • Open fracture subluxation superior radioulnar joint
  • Open multiple fractures of upper end of radius
  • Open traumatic dislocation elbow joint, divergent
  • Open traumatic dislocation elbow joint, lateral
  • Open traumatic dislocation elbow joint, medial
  • Open traumatic dislocation superior radioulnar joint
  • Open traumatic subluxation of elbow
  • Open traumatic subluxation superior radioulnar joint
  • Open wound of elbow

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Open wound of elbow and forearm (S51). 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 S51.009S to ICD-9-CMHistory

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

ICD-9-CM
906.1 Late eff open wnd extrem
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 S51.009SOverview

Is S51.009S (Unspecified open wound of unspecified elbow) a billable code?

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

What does the 7th character S in S51.009S mean?

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

What MS-DRG does S51.009S group to?

When unspecified open wound of unspecified elbow, 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 S51.009S 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 open wound of unspecified elbow, sequela on inpatient claims.

What is the ICD-9 equivalent of S51.009S?

Under the General Equivalence Mappings, unspecified open wound of unspecified elbow, sequela converts to ICD-9-CM 906.1 (late eff open wnd extrem). 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.