2026 ICD-10-CM Diagnosis Code S39.94XAUnspecified injury of external genitals, initial encounter

ICD-10-CM Codes›S00–T88›S30-S39›S39

ICD-10-CM S39.94XA
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S39.94XA is a billable ICD-10-CM diagnosis code for unspecified injury of external genitals, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 913 through 914, 963 through 965. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other unspecified injury.

Code Identity

ICD-10-CM Code
S39.94XA
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified injury of external genitals, initial encounter
Short Description
Unspecified injury of external genitals, initial encounter
Same as the full description in the CMS dataset.
Parent Code
S39.94
Unspecified injury of external genitals

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS30-S39Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals
CategoryS39Other and unspecified injuries of abdomen, lower back, pelvis and external genitals
This CodeS39.94XAUnspecified injury of external genitals, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Genital injury
  • Injury of female genital organ due to obstetric procedure
  • Injury of female perineum
  • Injury of male external genital organs
  • Injury of male genital organ
  • Injury of male perineum
  • Injury of perineum
  • Injury of testis
  • Injury of vulva
  • Metal foreign body in perineum
  • Metal foreign body in trunk
  • Multiple injuries of external genitalia
  • Priapism
  • Priapism due to trauma
  • Self-inflicted trauma involving penis
  • Traumatic injury of external genitalia
  • Traumatic injury to vulva during pregnancy

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Other and unspecified injuries of abdomen, lower back, pelvis and external genitals (S39). 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 INJ027
Other unspecified injury
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Priapism

    a prolonged painful erection that may lasts hours and is not associated with sexual activity. it is seen in patients with sickle cell anemia, advanced malignancy, spinal trauma; and certain drug treatments.

  • Priapism

    persistent and usually painful erection that lasts for at least four hours in the absence of physical or psychological stimulation, which can be caused by hematologic disorders, including sickle cell disease and leukemia, spinal cord injuries, and medications.

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 S39.94XA to ICD-9-CMHistory

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

ICD-9-CM
959.14 Inj external genital NEC
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 S39.94XAOverview

Is S39.94XA (Unspecified injury of external genitals) a billable code?

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

What does the 7th character A in S39.94XA mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for unspecified injury of external genitals, such as an emergency visit or first evaluation.

What MS-DRG does S39.94XA group to?

When unspecified injury of external genitals, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 913, 914, 963, 964, 965, with relative weights from 0.8855 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of S39.94XA?

Under the General Equivalence Mappings, unspecified injury of external genitals, initial encounter converts to ICD-9-CM 959.14 (inj external genital NEC). 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.