Is ICD-10-CM code A92 billable?

No, A92 (Other mosquito-borne viral fevers) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code A92 belong to?

A92 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

A92Not billable, use a more specific code below

Other mosquito-borne viral fevers

In Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99), chapter 1: Certain Infectious and Parasitic Diseases

11 billable codes under A92: 4 are an MCC, 7 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

Instructional notes

Excludes1: not coded here, use a different code

Ross River disease (B33.1)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.

Human Immunodeficiency Virus (HIV) Infections (page 19)
Infectious agents as the cause of diseases classified to other chapters (page 22)
Infections resistant to antibiotics (page 22)
Sepsis, Severe Sepsis, and Septic Shock (page 23)
Methicillin Resistant Staphylococcus aureus (MRSA) Conditions (page 27)
Zika virus infections (page 28)
Coronavirus infections (page 28)

Read Section I.C.1 (page 19)

All codes under A92

A92 can't be used on a claim. Pick a billable code below; grey headings group them.

A92 MS-DRGs

As the principal diagnosis, the billable codes under A92 group to these 7 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 865 Viral Illness with MCC (10 of 11 codes)
DRG 866 Viral Illness without MCC (10 of 11 codes)
DRG 023 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator (1 of 11 codes)
DRG 024 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC (1 of 11 codes)
DRG 097 Non-Bacterial Infection of Nervous System Except Viral Meningitis with MCC (1 of 11 codes)
DRG 098 Non-Bacterial Infection of Nervous System Except Viral Meningitis with CC (1 of 11 codes)
DRG 099 Non-Bacterial Infection of Nervous System Except Viral Meningitis without CC/MCC (1 of 11 codes)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Viral Infections

Viruses are very tiny germs. They are made of genetic material (either DNA or RNA) inside of a protein coating. There are a huge number of viruses on earth. Only a small number of them can infect humans. Those viruses can infect our cells, which may cause disease. Some of the diseases that viruses can cause include the common cold, the flu, COVID-19, and HIV.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.