Chapter XVIII
Fever of unknown origin - R50

Excludes:

• fever of unknown origin (during)(in):
  
• labour ( O75.2 )
  
• newborn ( P81.9 )
  
• puerperal pyrexia NOS ( O86.4 )

R50.0

Fever with chills

Fever with rigors

R50.1

Persistent fever

R50.9

Fever, unspecified

Hyperpyrexia NOS
Pyrexia NOS

Excludes:

• malignant hyperthermia due to anaesthesia ( T88.3 )

Related drugs:

• Acetaminophen
• Acetaminophen; Aspirin; Caffeine
• Acetaminophen; Caffeine; Chlorpheniramine; Vitamin C
• Acetaminophen; Caffeine; Codeine; Metamizole; Phenobarbital
• Acetaminophen; Caffeine; Pheniramine; Phenylephrine
• Acetaminophen; Caffeine; Propyphenazone
• Acetaminophen; Chlorpheniramine; Dextromethorphan; Phenylephrine
• Aspirin; Caffeine; Ethenzamide
• Acetaminophen; Chlorpheniramine; Phenylephrine
• Acetaminophen; Vitamin C
• Amphotericin B
• Caffeine; Naproxen; Salicylamide
• Diclofenac
• Fenpiverinium; Metamizole; Pitofenone
• Ibuprofen
• Metamizole
• Metamizole; Quinine
• Naproxen
• Nimesulide

The information was verified by Dr. Rachana Salvi, MD Pharmacology