2026 ICD-10-CM Diagnosis Code S37.99XAOther injury of unspecified urinary and pelvic organ, initial encounter

ICD-10-CM Codes›S00–T88›S30-S39›S37

ICD-10-CM S37.99XA
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S37.99XA is a billable ICD-10-CM diagnosis code for other injury of unspecified urinary and pelvic organ, 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 729 through 730, 742 through 743, 760 through 761, 963 through 965. Coders also document this condition as disruption of pelviureteric junction. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Internal organ injury, initial encounter.

Code Identity

ICD-10-CM Code
S37.99XA
Billable Status
Yes — Valid for Submission
Code Describes
Other injury of unspecified urinary and pelvic organ, initial encounter
Short Description
Other injury of unsp urinary and pelvic organ, init encntr
Parent Code
S37.99
Other injury of unspecified urinary and pelvic organ

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
CategoryS37Injury of urinary and pelvic organs
This CodeS37.99XAOther injury of unspecified urinary and pelvic organ, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disruption of pelviureteric junction

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Injury of urinary and pelvic organs (S37). 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 INJ010
Internal organ injury, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert S37.99XA to ICD-9-CMHistory

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

ICD-9-CM
867.8 Pelvic organ inj NOS-cl
Approximate The match is approximate rather than exact.
ICD-9-CM
869.0 Internal inj NOS-closed
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 S37.99XAOverview

Is S37.99XA (Other injury of unspecified urinary and pelvic organ) a billable code?

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

What does the 7th character A in S37.99XA mean?

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

What MS-DRG does S37.99XA group to?

When other injury of unspecified urinary and pelvic organ, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 729, 730, 742, 743, 760, 761, 963, 964, 965, with relative weights from 0.5696 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of S37.99XA?

Under the General Equivalence Mappings, other injury of unspecified urinary and pelvic organ, initial encounter converts to ICD-9-CM 867.8 (pelvic organ inj NOS-cl) and 869.0 (internal inj NOS-closed). 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.