Skip to content
Dx

ICD-10-CM 2027 diagnosis code

A30.1Tuberculoid leprosy

✓ Billable / specificCC — complication/comorbidity

A30.1 is a valid, billable ICD-10-CM code for tuberculoid leprosy. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A30.1

A30.1 is the ICD-10-CM diagnosis code for tuberculoid leprosy. It belongs to category A30 (leprosy [Hansen's disease]), block A30-A49 (other bacterial diseases) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within A30 (leprosy [Hansen's disease]), A30.1 is specifically for tuberculoid leprosy. Related codes cover indeterminate leprosy (A30.0), borderline tuberculoid leprosy (A30.2), borderline leprosy (A30.3), borderline lepromatous leprosy (A30.4), lepromatous leprosy (A30.5), other forms of leprosy (A30.8) and leprosy, unspecified (A30.9).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC, relative weight 2.1859), DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC, relative weight 1.0235) and DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 030.1 (tuberculoid leprosy [type T]).

Coding notes

Applicable toConditions and synonyms classified to this code
  • TT leprosy

Notes that apply from higher levels

Instructions written at a parent level also apply to A30.1.

› From A30 Leprosy [Hansen's disease]
Includes
  • infection due to Mycobacterium leprae
Excludes1
  • sequelae of leprosy (B92)

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to A30.1.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 030.1Tuberculoid leprosy [type T]exact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about A30.1

Is A30.1 billable?

Yes. A30.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can A30.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict A30.1 as a principal diagnosis.

Is A30.1 a CC or MCC?

A30.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does A30.1 group to?

A30.1 is used in the MS-DRG v44.0 logic for MS-DRG 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC), MS-DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC) and MS-DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for A30.1?

The CMS General Equivalence Mappings map A30.1 to ICD-9-CM 030.1.