ICD-10-CM 2027 diagnosis code
A18.18Tuberculosis of other female genital organs
A18.18 is a valid, billable ICD-10-CM code for tuberculosis of other female genital organs. 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 A18.18
A18.18 is the ICD-10-CM diagnosis code for tuberculosis of other female genital organs. It belongs to category A18 (tuberculosis of other organs), block A15-A19 (tuberculosis) 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 A18.1, choose A18.18 (Tuberculosis of other female genital organs) only when documentation doesn't support a more specific option: unspecified (A18.10), tuberculosis of kidney and ureter (A18.11), tuberculosis of bladder (A18.12), tuberculosis of other urinary organs (A18.13), tuberculosis of prostate (A18.14), tuberculosis of other male genital organs (A18.15), tuberculosis of cervix (A18.16) and tuberculous female pelvic inflammatory disease (A18.17).
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 742 (Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC, relative weight 1.8456), DRG 743 (Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC, relative weight 1.2974), DRG 757 (Infections, Female Reproductive System with MCC, relative weight 1.4649), DRG 758 (Infections, Female Reproductive System with CC, relative weight 0.9908), DRG 759 (Infections, Female Reproductive System without CC/MCC, relative weight 0.7691), DRG 974 (HIV with Major Related Condition with MCC, relative weight 3.0506) and 2 more, in MDC 13 (Diseases and Disorders of the Female Reproductive System) and MDC 25 (Human Immunodeficiency Virus Infections), 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 is on the CMS list of diagnoses consistent only with female patients (the sex-conflict edit itself was retired in FY2025).
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 016.70 (tuberculosis of other female genital organs, unspecified).
Coding notes
- Tuberculous ulceration of vulva
Notes that apply from higher levels
Instructions written at a parent level also apply to A18.18.
Broader instructions also apply from A15-A19 Tuberculosis and Chapter 1: Certain infectious and parasitic diseases.
Alphabetic index entries
8 entriesTerms in the official ICD-10-CM index that lead to A18.18.
- Cyst (colloid) (mucous) (simple) (retention) › ovary, ovarian (twisted) › tuberculous
- Fistula (cutaneous) › rectovaginal › tuberculous
- Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › cyst, ovary
- Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › vagina
- Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › vulva
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › vulva (acute) (infectional) › in (due to) › tuberculosis
- Vaginitis (acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative) › tuberculous
- Vulvitis (acute) (allergic) (atrophic) (hypertrophic) (intertriginous) (senile) › tuberculous
Codes whose notes reference A18.18
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.
MDC 13 · Diseases and Disorders of the Female Reproductive System
MDC 13 · Diseases and Disorders of the Female Reproductive System
MDC 25 · Human Immunodeficiency Virus Infections
ICD-9-CM equivalent
Converter →- 016.70Tuberculosis of other female genital organs, unspecifiedapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about A18.18
Is A18.18 billable?
- Yes. A18.18 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A18.18 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A18.18 as a principal diagnosis.
Is A18.18 a CC or MCC?
- A18.18 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does A18.18 group to?
- A18.18 is used in the MS-DRG v44.0 logic for MS-DRG 742 (Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC), MS-DRG 743 (Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC), MS-DRG 757 (Infections, Female Reproductive System with MCC), MS-DRG 758 (Infections, Female Reproductive System with CC), MS-DRG 759 (Infections, Female Reproductive System without CC/MCC), MS-DRG 974 (HIV with Major Related Condition with MCC) and 2 more. 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 A18.18?
- The CMS General Equivalence Mappings map A18.18 to ICD-9-CM 016.70.