Alphabetic Index FY2027

A18

Tuberculosis of other organs

FY2027Chapter 1: Certain infectious and parasitic diseases/A15–A19 Tuberculosis

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

A18 is a non-billable ICD-10-CM code category for tuberculosis of other organs. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are A18.0 Tuberculosis of bones and joints; A18.1 Tuberculosis of genitourinary system; A18.2 Tuberculous peripheral lymphadenopathy; A18.3 Tuberculosis of intestines, peritoneum and mesenteric glands and 5 more. Its coding notes include a Use additional code instruction, 7 Excludes1 entries and 5 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

Also from chapter/block level (2 notes)
Inherited from A15–A19 Tuberculosis
  • code, if applicable, for associated cachexia (E88.A)
Inherited from Chapter 1 Certain infectious and parasitic diseases
  • code to identify resistance to antimicrobial drugs (Z16.-)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (7 notes)
Inherited from A15–A19 Tuberculosis
  • congenital tuberculosis (P37.0)
  • nonspecific reaction to test for tuberculosis without active tuberculosis (R76.1-)
  • pneumoconiosis associated with tuberculosis, any type in A15 (J65)
  • positive PPD (R76.11)
  • positive tuberculin skin test without active tuberculosis (R76.11)
  • sequelae of tuberculosis (B90.-)
  • silicotuberculosis (J65)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (5 notes)
Inherited from Chapter 1 Certain infectious and parasitic diseases
  • 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)

Includes

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

Also from chapter/block level (2 notes)
Inherited from A15–A19 Tuberculosis
  • infections due to Mycobacterium tuberculosis and Mycobacterium bovis
Inherited from Chapter 1 Certain infectious and parasitic diseases
  • diseases generally recognized as communicable or transmissible

More specific codes under A18 9