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A18Non-billableSave

A18 - Tuberculosis of other organs

ICD-10-CM Chapter 1: Certain infectious and parasitic diseases · A15-A19 Tuberculosis (A15-A19) · Top-level category · FY2027

Coding Guidance

A18 is a non-billable heading. Report one of the 9 more specific codes below.

Includes, Excludes and Coding Notes

IncludesFrom A15-A19 Tuberculosis (A15-A19)

Conditions this code covers.

  • infections due to Mycobacterium tuberculosis and Mycobacterium bovis
Excludes 1 — Not Coded HereFrom A15-A19 Tuberculosis (A15-A19)

Mutually exclusive: these conditions are never reported together with this code.

  • 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)
Use Additional CodeFrom A15-A19 Tuberculosis (A15-A19)

Add a secondary code to identify the associated condition or cause when it is documented.

  • code, if applicable, for associated cachexia (E88.A)
IncludesFrom Chapter A00-B99

Conditions this code covers.

  • diseases generally recognized as communicable or transmissible
Excludes 2 — Not Included HereFrom Chapter A00-B99

Not part of this code; report both codes when the patient has both conditions.

  • 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 CodeFrom Chapter A00-B99

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify resistance to antimicrobial drugs (Z16.-)

More Specific Codes (9)

A18.0Tuberculosis of bones and joints→A18.1Tuberculosis of genitourinary system→A18.2Tuberculous peripheral lymphadenopathy→A18.3Tuberculosis of intestines, peritoneum and mesenteric glands→A18.4Tuberculosis of skin and subcutaneous tissue→A18.5Tuberculosis of eye→A18.6Tuberculosis of (inner) (middle) ear→A18.7Tuberculosis of adrenal glands→A18.8Tuberculosis of other specified organs→