2026 ICD-10-CM Diagnosis Code S37.591SOther injury of fallopian tube, unilateral, sequela

ICD-10-CM Codes›S00–T88›S30-S39›S37

ICD-10-CM S37.591S
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S37.591S is a billable ICD-10-CM diagnosis code for other injury of fallopian tube, unilateral, 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 742 through 743, 760 through 761. The code is exempt from POA reporting. Coders also document this condition as crushing injury of abdomen. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.

Code Identity

ICD-10-CM Code
S37.591S
Billable Status
Yes — Valid for Submission
Code Describes
Other injury of fallopian tube, unilateral, sequela
Short Description
Other injury of fallopian tube, unilateral, sequela
Same as the full description in the CMS dataset.
Parent Code
S37.591
Other injury of fallopian tube, unilateral

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 CodeS37.591SOther injury of fallopian tube, unilateral, sequela

Present on Admission (POA)Billing

S37.591S 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 abdomen
  • Crushing of fallopian tube

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 INJ073
Injury, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Uterine Diseases

The uterus, or womb, is the place where a fetus grows during pregnancy. Uterine diseases are conditions that affect the uterus. These diseases can be benign (not cancer) or malignant (cancerous). They may affect your menstrual periods, your ability to get pregnant, or the health of your reproductive organs.

The full article covers:

  • What are uterine diseases?
  • What causes uterine diseases?
  • What are the symptoms of uterine diseases?
  • How are uterine diseases diagnosed?
  • What are the treatments for uterine diseases?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert S37.591S to ICD-9-CMHistory

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

ICD-9-CM
908.2 Late eff int injury 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 S37.591SOverview

Is S37.591S (Other injury of fallopian tube, unilateral) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other injury of fallopian tube, unilateral, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character S in S37.591S mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the other injury of fallopian tube, unilateral itself has resolved, not the original event.

What MS-DRG does S37.591S group to?

When other injury of fallopian tube, unilateral, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.5696 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S37.591S 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 other injury of fallopian tube, unilateral, sequela on inpatient claims.

What is the ICD-9 equivalent of S37.591S?

Under the General Equivalence Mappings, other injury of fallopian tube, unilateral, sequela converts to ICD-9-CM 908.2 (late eff int injury 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.