2027 ICD-10-CM Diagnosis Code S39.94XAUnspecified injury of external genitals, initial encounter
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 2027 (October 1, 2026 through September 30, 2027) 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
Code Classification
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 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 S39.94XA: its own notes plus those printed at S39, block S30-S39, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- injuries to the abdominal wall
- injuries to the anus
- injuries to the buttock
- injuries to the external genitalia
- injuries to the flank
- injuries to the groin
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.
- sprain of joints and ligaments of lumbar spine and pelvis (S33.-)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- 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.
Notes
General instructions on how these codes are used.
- 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.
- The appropriate 7th character is to be added to each code from category S39
- Ainitial encounter this code
- Dsubsequent encounter
- Ssequela
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Code HistoryHistory
Questions About S39.94XAOverview
What is the ICD-10 code for unspecified injury of external genitals, initial encounter?
The ICD-10-CM code for unspecified injury of external genitals, initial encounter is S39.94XA (sometimes written as S3994XA). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
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, 2026 through September 30, 2027.
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 964, 965, 914, 913, 963, with relative weights from 0.9281 to 2.6361 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.
