Is ICD-10-CM code A71 billable?

No, A71 (Trachoma) 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 A71 belong to?

A71 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

A71Not billable, use a more specific code below

Trachoma

In Other diseases caused by chlamydiae (A70-A74), chapter 1: Certain Infectious and Parasitic Diseases

3 billable codes under A71: none are a CC or MCC; none map to an HCC.

Instructional notes

Excludes1: not coded here, use a different code

sequelae of trachoma (B94.0)

Also applies, from Other diseases caused by chlamydiae (A70-A74)

These notes sit on A70-A74 and apply to every code under it, including A71.

Excludes1: not coded here, use a different code

sexually transmitted chlamydial diseases (A55-A56)

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 A71

A71 can't be used on a claim. Pick a billable code below; grey headings group them.

A71 MS-DRGs

As the principal diagnosis, all 3 billable codes under A71 group to MS-DRG 124 or 125 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

About the condition

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

Bacterial Infections

Bacteria are tiny organisms (living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. They can be found almost everywhere on Earth. There are lots of bacteria in and on your body. In fact, your body has about 10 times more bacteria cells than human cells.

Eye Infections

Your eyes can get infections from bacteria, fungi, or viruses. Eye infections can occur in different parts of the eye and can affect just one eye or both. Two common eye infections are:

Code history

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