2026 ICD-10-CM Diagnosis Code S37.20XAUnspecified injury of bladder, initial encounter
S37.20XA is a billable ICD-10-CM diagnosis code for unspecified injury of bladder, 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 698 through 700, 963 through 965. Coders also document this condition as closed injury of urinary bladder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Internal organ injury, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Closed injury of urinary bladder
- Injury of neck of urinary bladder
- Injury of urinary bladder
- Injury of urinary bladder and urethra
- Injury of urinary bladder and urethra with open wound into abdominal cavity
- Injury of urinary bladder during surgery
- Open injury of urinary bladder
- Pelvic organ injury with open wound into abdominal cavity
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.
Patient EducationClinical
Bladder Diseases
The bladder is a hollow organ in your lower abdomen that stores urine. Many conditions can affect your bladder. Some common ones are:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S37.20XA to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S37.20XAOverview
Is S37.20XA (Unspecified injury of bladder) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of bladder, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in S37.20XA mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for unspecified injury of bladder, such as an emergency visit or first evaluation.
What MS-DRG does S37.20XA group to?
When unspecified injury of bladder, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 698, 699, 700, 963, 964, 965, with relative weights from 0.6899 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of S37.20XA?
Under the General Equivalence Mappings, unspecified injury of bladder, initial encounter converts to ICD-9-CM 867.0 (bladder/urethra inj-clos). 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.
