Is ICD-10-CM code A06 billable?

No, A06 (Amebiasis) 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 A06 belong to?

A06 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

A06Not billable, use a more specific code below

Amebiasis

In Intestinal infectious diseases (A00-A09), chapter 1: Certain Infectious and Parasitic Diseases

12 billable codes under A06: 3 are an MCC, 7 are a CC; 1 map to HCC 283 (Empyema, Lung Abscess).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

Instructional notes

Includes: conditions that are coded here

infection due to Entamoeba histolytica

Excludes1: not coded here, use a different code

other protozoal intestinal diseases (A07.-)

Excludes2: not included here, code separately if applicable

acanthamebiasis (B60.1-)
Naegleriasis (B60.2)

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 A06

A06 can't be used on a claim. Pick a billable code below; grey headings group them.

A06 MS-DRGs

As the principal diagnosis, the billable codes under A06 group to these 19 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (5 of 12 codes)
DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (5 of 12 codes)
DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (5 of 12 codes)
DRG 371 Major Gastrointestinal Disorders and Peritoneal Infections with MCC (3 of 12 codes)
DRG 372 Major Gastrointestinal Disorders and Peritoneal Infections with CC (3 of 12 codes)
DRG 373 Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC (3 of 12 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 12 codes)
DRG 024 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC (1 of 12 codes)
DRG 097 Non-Bacterial Infection of Nervous System Except Viral Meningitis with MCC (1 of 12 codes)
DRG 098 Non-Bacterial Infection of Nervous System Except Viral Meningitis with CC (1 of 12 codes)
DRG 099 Non-Bacterial Infection of Nervous System Except Viral Meningitis without CC/MCC (1 of 12 codes)
DRG 177 Respiratory Infections and Inflammations with MCC (1 of 12 codes)
DRG 178 Respiratory Infections and Inflammations with CC (1 of 12 codes)
DRG 179 Respiratory Infections and Inflammations without CC/MCC (1 of 12 codes)
DRG 441 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC (1 of 12 codes)
DRG 442 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC (1 of 12 codes)
DRG 443 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC (1 of 12 codes)
DRG 606 Minor Skin Disorders with MCC (1 of 12 codes)
DRG 607 Minor Skin Disorders without MCC (1 of 12 codes)

Other codes that refer to A06

Notes on these codes point to A06.

B50-B64 Excludes1: amebiasis (A06.-)

About the condition

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

Gastroenteritis

Gastroenteritis is an inflammation of the lining of the stomach and intestines. The main symptoms include vomiting and diarrhea. It is usually not serious in healthy people, but it can sometimes lead to dehydration or cause severe symptoms.

Parasitic Diseases

Parasites are living things that use other living things - like your body - for food and a place to live. You can get them from contaminated food or water, a bug bite, or sexual contact. Some parasitic diseases are easily treated and some are not.

Code history

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