B52.9 Plasmodium malariae malaria without complication

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

Applicable to

• Plasmodium malariae malaria NOS

Applies from B52 Plasmodium malariae malaria

Includes

• mixed infections of Plasmodium malariae with other Plasmodium species, except Plasmodium falciparum and Plasmodium vivax

Excludes1 (never code together)

• Plasmodium falciparum (B50.-)
• Plasmodium vivax (B51.-)

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 084.2 Quartan malaria (approximate)
• 084.5 Mixed malaria (approximate)

Code annotations containing back-references to B52.9

Back-references to B52

• Type 1 Excludes: B53.0 Plasmodium ovale malaria ("Plasmodium ovale with Plasmodium malariae (B52.-)")
• Type 1 Excludes: B53.1 Malaria due to simian plasmodia ("Malaria due to simian plasmodia with Plasmodium malariae (B52.-)")
• Type 2 Excludes: J82 Pulmonary eosinophilia, not elsewhere classified ("pulmonary eosinophilia due to specified parasitic infection (B50-B83)")

Diagnosis Index entries for B52.9

• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › quartan (malaria)
• Malaria, malarial (fever) › malariae
• Malaria, malarial (fever) › Plasmodium (P.) › malariae NEC

Nearby codes

• B52 Plasmodium malariae malaria
• B52.0 Plasmodium malariae malaria with nephropathy
• B52.8 Plasmodium malariae malaria with other complications
• B52.9 Plasmodium malariae malaria without complication (this code)