A23.9 – Brucellosis, unspecified
ICD-10-CM 2027 diagnosis code · Certain zoonotic bacterial diseases
ICD-10-CM code
A23.9
- Code
A23.9(claims format:A239)- Description
- Brucellosis, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- A20-A28 Certain zoonotic bacterial diseases
- Parent codes
- A23
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
A23 – Brucellosis
Includes:
- Malta fever
- Mediterranean fever
- undulant fever
Index terms for A23.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Brucellosis
- Fever, Malta
- Sepsis, Brucella
- Brucellosis, sepsis
- Fever, Mediterranean
- Brucellosis, dermatitis
- Spondylitis, in, brucellosis
- Pyelonephritis, in, brucellosis
- Infection, infected, infective, Brucella
- Disorder, tubulo-interstitial, brucellosis
- Spondylitis, in, brucellosis, lumbar region
- Spondylitis, in, brucellosis, multiple sites
- Spondylitis, in, brucellosis, cervical region
- Spondylitis, in, brucellosis, thoracic region
- Spondylitis, in, brucellosis, lumbosacral region
- Spondylitis, in, brucellosis, thoracolumbar region
- Spondylitis, in, brucellosis, sacrococcygeal region
- Spondylitis, in, brucellosis, cervicothoracic region
- Spondylitis, in, brucellosis, occipito-atlanto-axial region
- Nephritis, nephritic, tubulo-interstitial, due to, brucellosis
Related codes in A23
Frequently asked questions
What is ICD-10 code A23.9?
A23.9 is the ICD-10-CM code for brucellosis, unspecified, in the block A20-A28 (Certain zoonotic bacterial diseases).
Is A23.9 a billable code?
Yes. A23.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does A23.9 belong to?
It belongs to category A23 – Brucellosis.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.