A39.9 Meningococcal infection, unspecified

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Meningococcal disease NOS

MS-DRG index

Defines the logic of DRG(s) 870-872 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 036.9 Meningococcal infection, unspecified

Code annotations containing back-references to A39.9

Back-references to A39.9

• Type 1 Excludes: A49 Bacterial infection of unspecified site ("meningococcal infection NOS (A39.9)")

Diagnosis Index entries for A39.9

• Infection, infected, infective (opportunistic) › meningococcal
• Infection, infected, infective (opportunistic) › parameningococcus NOS
• Meningococcus, meningococcal

Nearby codes

• A39.81 Meningococcal encephalitis
• A39.82 Meningococcal retrobulbar neuritis
• A39.83 Meningococcal arthritis
• A39.84 Postmeningococcal arthritis
• A39.89 Other meningococcal infections
• A39.9 Meningococcal infection, unspecified (this code)