2026 ICD-10-CM Diagnosis Code S51.802DUnspecified open wound of left forearm, subsequent encounter

ICD-10-CM Codes›S00–T88›S50-S59›S51

ICD-10-CM S51.802D
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S51.802D is a billable ICD-10-CM diagnosis code for unspecified open wound of left forearm, 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 2026 (October 1, 2025 through September 30, 2026) 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 Open wounds to limbs, subsequent encounter.

Code Identity

ICD-10-CM Code
S51.802D
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified open wound of left forearm, subsequent encounter
Short Description
Unspecified open wound of left forearm, subsequent encounter
Same as the full description in the CMS dataset.
Parent Code
S51.802
Unspecified open wound of left forearm

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 CodeS51.802DUnspecified open wound of left forearm, subsequent encounter

Present on Admission (POA)Billing

S51.802D 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.

  • Fracture of coronoid process of ulna
  • Fracture of distal end of left radius
  • Fracture of distal end of left ulna
  • Fracture of head of left radius
  • Fracture of left olecranon
  • Fracture of proximal end of left radius
  • Fracture of proximal end of left ulna
  • Fracture of radial head
  • Fracture of radial neck
  • Fracture of shaft of left radius
  • Fracture of shaft of left ulna
  • Metaphyseal fracture of bone of upper limb
  • Open fracture of coronoid process of left ulna
  • Open fracture of coronoid process of ulna
  • Open fracture of distal end of left radius
  • Open fracture of distal end of left ulna
  • Open fracture of distal end of ulna
  • Open fracture of head of left radius
  • Open fracture of head of radius
  • Open fracture of left elbow
  • Open fracture of left forearm
  • Open fracture of left radius
  • Open fracture of left ulna
  • Open fracture of metaphysis of distal left radius
  • Open fracture of metaphysis of distal radius
  • Open fracture of neck of left radius
  • Open fracture of neck of radius
  • Open fracture of olecranon of left ulna
  • Open fracture of olecranon process of ulna
  • Open fracture of proximal end of left radius
  • Open fracture of proximal end of left ulna
  • Open fracture of shaft of bone of forearm
  • Open fracture of shaft of left radius
  • Open fracture of shaft of left ulna
  • Open fracture of shaft of radius
  • Open fracture of shaft of ulna
  • Open wound of left forearm

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 INJ049
Open wounds to limbs, subsequent encounter
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 S51.802D 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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S51.802DOverview

Is S51.802D (Unspecified open wound of left forearm) a billable code?

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

What does the 7th character D in S51.802D mean?

The final character D marks a subsequent encounter: use it for routine care while the unspecified open wound of left forearm is healing, after active treatment has ended.

What MS-DRG does S51.802D group to?

When unspecified open wound of left forearm, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 949, 950, with relative weights from 0.6277 to 1.1897 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S51.802D 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 left forearm, subsequent encounter on inpatient claims.

What is the ICD-9 equivalent of S51.802D?

Under the General Equivalence Mappings, unspecified open wound of left forearm, subsequent encounter converts to ICD-9-CM V58.89 (other specfied aftercare). 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.