2021 ICD-10-CM Code A18

Tuberculosis of other organs

Version 2021

Not Valid for Submission

A18 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of tuberculosis of other organs. The code is not specific and is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Short Description:Tuberculosis of other organs
Long Description:Tuberculosis of other organs

Code Classification

Specific Coding for Tuberculosis of other organs

Non-specific codes like A18 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for tuberculosis of other organs:

  • NON-BILLABLE CODE - A18.0 for Tuberculosis of bones and joints
  • BILLABLE CODE - Use A18.01 for Tuberculosis of spine
  • BILLABLE CODE - Use A18.02 for Tuberculous arthritis of other joints
  • BILLABLE CODE - Use A18.03 for Tuberculosis of other bones
  • BILLABLE CODE - Use A18.09 for Other musculoskeletal tuberculosis
  • NON-BILLABLE CODE - A18.1 for Tuberculosis of genitourinary system
  • BILLABLE CODE - Use A18.10 for Tuberculosis of genitourinary system, unspecified
  • BILLABLE CODE - Use A18.11 for Tuberculosis of kidney and ureter
  • BILLABLE CODE - Use A18.12 for Tuberculosis of bladder
  • BILLABLE CODE - Use A18.13 for Tuberculosis of other urinary organs
  • BILLABLE CODE - Use A18.14 for Tuberculosis of prostate
  • BILLABLE CODE - Use A18.15 for Tuberculosis of other male genital organs
  • BILLABLE CODE - Use A18.16 for Tuberculosis of cervix
  • BILLABLE CODE - Use A18.17 for Tuberculous female pelvic inflammatory disease
  • BILLABLE CODE - Use A18.18 for Tuberculosis of other female genital organs
  • BILLABLE CODE - Use A18.2 for Tuberculous peripheral lymphadenopathy
  • NON-BILLABLE CODE - A18.3 for Tuberculosis of intestines, peritoneum and mesenteric glands
  • BILLABLE CODE - Use A18.31 for Tuberculous peritonitis
  • BILLABLE CODE - Use A18.32 for Tuberculous enteritis
  • BILLABLE CODE - Use A18.39 for Retroperitoneal tuberculosis
  • BILLABLE CODE - Use A18.4 for Tuberculosis of skin and subcutaneous tissue
  • NON-BILLABLE CODE - A18.5 for Tuberculosis of eye
  • BILLABLE CODE - Use A18.50 for Tuberculosis of eye, unspecified
  • BILLABLE CODE - Use A18.51 for Tuberculous episcleritis
  • BILLABLE CODE - Use A18.52 for Tuberculous keratitis
  • BILLABLE CODE - Use A18.53 for Tuberculous chorioretinitis
  • BILLABLE CODE - Use A18.54 for Tuberculous iridocyclitis
  • BILLABLE CODE - Use A18.59 for Other tuberculosis of eye
  • BILLABLE CODE - Use A18.6 for Tuberculosis of (inner) (middle) ear
  • BILLABLE CODE - Use A18.7 for Tuberculosis of adrenal glands
  • NON-BILLABLE CODE - A18.8 for Tuberculosis of other specified organs
  • BILLABLE CODE - Use A18.81 for Tuberculosis of thyroid gland
  • BILLABLE CODE - Use A18.82 for Tuberculosis of other endocrine glands
  • BILLABLE CODE - Use A18.83 for Tuberculosis of digestive tract organs, not elsewhere classified
  • BILLABLE CODE - Use A18.84 for Tuberculosis of heart
  • BILLABLE CODE - Use A18.85 for Tuberculosis of spleen
  • BILLABLE CODE - Use A18.89 for Tuberculosis of other sites

Information for Patients


Also called: TB

Tuberculosis (TB) is a disease caused by bacteria called Mycobacterium tuberculosis. The bacteria usually attack the lungs, but they can also damage other parts of the body.

TB spreads through the air when a person with TB of the lungs or throat coughs, sneezes, or talks. If you have been exposed, you should go to your doctor for tests. You are more likely to get TB if you have a weak immune system.

Symptoms of TB in the lungs may include

Skin tests, blood tests, x-rays, and other tests can tell if you have TB. If not treated properly, TB can be deadly. You can usually cure active TB by taking several medicines for a long period of time.

NIH: National Institute of Allergy and Infectious Diseases

[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)