2026 ICD-10-CM Diagnosis Code B96.83Acinetobacter baumannii as the cause of diseases classified elsewhere

ICD-10-CM Codes›A00–B99›B95-B97›B96

ICD-10-CM B96.83
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B96.83 is a billable ICD-10-CM diagnosis code for acinetobacter baumannii as the cause of diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 867 through 869. The code is not accepted as a principal diagnosis by the Medicare Code Editor. Coders also document this condition as infection caused by Acinetobacter. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections.

Code Identity

ICD-10-CM Code
B96.83
Billable Status
Yes — Valid for Submission
Code Describes
Acinetobacter baumannii as the cause of diseases classified elsewhere
Short Description
Acinetobacter baumannii causing diseases classd elswhr
Parent Code
B96.8
Other specified bacterial agents as the cause of diseases classified elsewhere

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB95-B97Bacterial and viral infectious agents
CategoryB96Other bacterial agents as the cause of diseases classified elsewhere
This CodeB96.83Acinetobacter baumannii as the cause of diseases classified elsewhere

Code EditsBilling

Medicare Code Editor checks that affect claim validity for B96.83.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Infection caused by Acinetobacter
  • Infection caused by Acinetobacter baumannii

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Infection, infected, infective(opportunistic)
      • Acinetobacter baumannii, as cause of disease classified elsewhere
    • Infection, infected, infective(opportunistic)
      • bacterial NOS
        • as cause of disease classified elsewhere
          • Acinetobacter baumannii

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF003
Bacterial infections
Default principal diagnosis: inpatient No · outpatient No

Code History & ChangesHistory

Replacement B96.83 replaces the following previously assigned code(s):

  • B96.89 - Oth bacterial agents as the cause of diseases classd elswhr
FY 2024AddedAdded to the ICD-10-CM code setEffective October 1, 2023.
FY 2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B96.83Overview

Is B96.83 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report acinetobacter baumannii as the cause of diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B96.83 group to?

On inpatient claims, acinetobacter baumannii as the cause of diseases classified elsewhere maps to MS-DRG 867, 868, 869, with relative weights from 0.7297 to 2.0932 depending on complications. Higher weights mean higher Medicare reimbursement.

Can B96.83 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because acinetobacter baumannii as the cause of diseases classified elsewhere describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

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.