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ICD-10/Z20.1

Z20.1 ICD-10-CM Code: Contact with and (suspected) exposure to tuberculosis

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 795 — NORMAL NEWBORN (MDC 15)
  • MS-DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Contact with and (suspected) exposure to tuberculosis is a billable ICD-10-CM diagnosis code (Z20.1).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for Z20.1 in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

  • carrier of infectious disease (Z22.-)
  • diagnosed current infectious or parasitic disease -see Alphabetic Index

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • personal history of infectious and parasitic diseases (Z86.1-)

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z20.1 in its code family, with their registry titles.

  • Z20 — Contact with and (suspected) exposure to communicable diseases
  • Z20.0 — Contact with and (suspected) exposure to intestinal infectious diseases
  • Z20.01 — Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli)
  • Z20.09 — Contact with and (suspected) exposure to other intestinal infectious diseases
  • Z20.2 — Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission
  • Z20.3 — Contact with and (suspected) exposure to rabies
  • Z20.4 — Contact with and (suspected) exposure to rubella
  • Z20.5 — Contact with and (suspected) exposure to viral hepatitis
  • Z20.6 — Contact with and (suspected) exposure to human immunodeficiency virus [HIV]
  • Z20.7 — Contact with and (suspected) exposure to pediculosis, acariasis and other infestations

View all codes in the Z20 family

Indexed Clinical Terms (4)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Contact (with), tuberculosis
  • Exposure (to), tuberculosis
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative), contact
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative), exposure (to)