ICD-10-CM 2027
ICD-10 code for meningococcus exposure
From the official ICD-10-CM alphabetic index entry “Exposure (to) › meningococcus”. Page updated September 29, 2026.
About coding meningococcus exposure
The ICD-10-CM code for meningococcus exposure is Z20.811 (Contact with and (suspected) exposure to meningococcus).
Within Z20.81 (contact with and (suspected) exposure to other bacterial communicable diseases), Z20.811 is specifically for contact with and (suspected) exposure to meningococcus. Related codes cover anthrax (Z20.810) and other bacterial communicable diseases (Z20.818).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 795 (Normal Newborn, relative weight 0.2022) and DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period) and MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about meningococcus exposure ICD-10 codes
What is the ICD-10 code for meningococcus exposure?
- Z20.811 — Contact with and (suspected) exposure to meningococcus.
Is Z20.811 billable?
- Yes. Z20.811 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z20.811 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Z20.811 as a principal diagnosis.
Is Z20.811 a CC or MCC?
- No. Z20.811 is neither a CC nor an MCC under MS-DRG v44.0.