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ICD-10/Z20.828

Z20.828 ICD-10-CM Code: Contact with and (suspected) exposure to other viral communicable diseases

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 other viral communicable diseases is a billable ICD-10-CM diagnosis code (Z20.828).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for Z20.828 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 Z20.828 in its code family, with their registry titles.

  • Z20.81 — Contact with and (suspected) exposure to other bacterial communicable diseases
  • Z20.810 — Contact with and (suspected) exposure to anthrax
  • Z20.811 — Contact with and (suspected) exposure to meningococcus
  • Z20.818 — Contact with and (suspected) exposure to other bacterial communicable diseases
  • Z20.82 — Contact with and (suspected) exposure to other viral communicable diseases
  • Z20.820 — Contact with and (suspected) exposure to varicella
  • Z20.821 — Contact with and (suspected) exposure to Zika virus
  • Z20.822 — Contact with and (suspected) exposure to COVID-19
  • Z20.89 — Contact with and (suspected) exposure to other communicable diseases
  • Z20.9 — Contact with and (suspected) exposure to unspecified communicable disease

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), communicable disease, viral NEC
  • Contact (with), viral disease NEC
  • Exposure (to), communicable disease, viral NEC
  • Exposure (to), viral disease NEC