Is ICD-10-CM code A17 billable?

No, A17 (Tuberculosis of nervous system) 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 A17 belong to?

A17 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

A17Not billable, use a more specific code below

Tuberculosis of nervous system

In Tuberculosis (A15-A19), chapter 1: Certain Infectious and Parasitic Diseases

7 billable codes under A17: 6 are an MCC, 1 is 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

Also applies, from Tuberculosis (A15-A19)

These notes sit on A15-A19 and apply to every code under it, including A17.

Includes: conditions that are coded here

infections due to Mycobacterium tuberculosis and Mycobacterium bovis

Excludes1: not coded here, use a different code

congenital tuberculosis (P37.0)
nonspecific reaction to test for tuberculosis without active tuberculosis (R76.1-)
pneumoconiosis associated with tuberculosis, any type in A15 (J65)
positive PPD (R76.11)
positive tuberculin skin test without active tuberculosis (R76.11)
sequelae of tuberculosis (B90.-)
silicotuberculosis (J65)

Use additional code: add a second code for this, listed after this one

code, if applicable, for associated cachexia (E88.A)

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 A17

A17 can't be used on a claim. Pick a billable code below; grey headings group them.

A17 MS-DRGs

As the principal diagnosis, the billable codes under A17 group to these 11 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 974 HIV with Major Related Condition with MCC (7 of 7 codes)
DRG 975 HIV with Major Related Condition with CC (7 of 7 codes)
DRG 976 HIV with Major Related Condition without CC/MCC (7 of 7 codes)
DRG 023 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator (6 of 7 codes)
DRG 024 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC (6 of 7 codes)
DRG 094 Bacterial and Tuberculous Infections of Nervous System with MCC (6 of 7 codes)
DRG 095 Bacterial and Tuberculous Infections of Nervous System with CC (6 of 7 codes)
DRG 096 Bacterial and Tuberculous Infections of Nervous System without CC/MCC (6 of 7 codes)
DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (1 of 7 codes)
DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (1 of 7 codes)
DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (1 of 7 codes)

About the condition

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

Tuberculosis

Tuberculosis (TB) is a bacterial disease that usually attacks the lungs. But it can also attack other parts of the body, including the kidneys, spine, and brain.

Code history

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