2027 ICD-10-CM Diagnosis Code A71.0Initial stage of trachoma

ICD-10-CM Codes›A00–B99›A70-A74›A71

ICD-10-CM A71.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A71.0 is a billable ICD-10-CM diagnosis code for initial stage of trachoma. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. Coders also document this condition as trachoma. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections and Other specified eye disorders.

Code Identity

ICD-10-CM Code
A71.0
Billable Status
Yes — Valid for Submission
Code Describes
Initial stage of trachoma
Short Description
Initial stage of trachoma
Same as the full description in the CMS dataset.
Parent Code
A71
Trachoma

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA70-A74Other diseases caused by chlamydiae
CategoryA71Trachoma
This CodeA71.0Initial stage of trachoma

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Trachoma
  • Trachoma, initial stage

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A71.0: its own notes plus those printed at A71, block A70-A74, and Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Trachoma dubium

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From A71 Trachoma applies to 3 codes
  • sequelae of trachoma (B94.0)
From Block A70-A74 Other diseases caused by chlamydiae applies to 8 codes
  • sexually transmitted chlamydial diseases (A55-A56)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF003
Bacterial infections
Default principal diagnosis: inpatient No · outpatient No
CCSR EYE012
Other specified eye disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Trachoma

    a chronic infection of the conjunctiva and cornea caused by chlamydia trachomatis.

Patient EducationClinical

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.

The full article covers:

  • What are bacteria?
  • How do bacterial infections spread?
  • What are the treatments for bacterial infections?
  • Can bacterial infections be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert A71.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
076.0 Trachoma, initial stage
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A71.0Overview

What is the ICD-10 code for initial stage of trachoma?

The ICD-10-CM code for initial stage of trachoma is A71.0 (sometimes written as A710). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is A71.0 (Trachoma) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report initial stage of trachoma on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does A71.0 group to?

When initial stage of trachoma is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.

Can A71.0 be reported with B94.0?

Not as a rule. The Excludes1 note at A71, which applies to A71.0, lists "sequelae of trachoma (B94.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of A71.0?

Under the General Equivalence Mappings, initial stage of trachoma converts to ICD-9-CM 076.0 (trachoma, initial stage). The mapping is a direct match.