Fever of other and unknown origin R50- >

Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as R50. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • chills without fever (
    ICD-10-CM Diagnosis Code R68.83

    Chills (without fever)

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Chills NOS
    Type 1 Excludes
    • chills with fever (R50.9)
    R68.83
    )
  • febrile convulsions (
    ICD-10-CM Diagnosis Code R56.0

    Febrile convulsions

      2016 2017 2018 Non-Billable/Non-Specific Code
    R56.0-
    )
  • fever of unknown origin during labor (
    ICD-10-CM Diagnosis Code O75.2

    Pyrexia during labor, not elsewhere classified

      2016 2017 2018 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    O75.2
    )
  • fever of unknown origin in newborn (
    ICD-10-CM Diagnosis Code P81.9

    Disturbance of temperature regulation of newborn, unspecified

      2016 2017 2018 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Fever of newborn NOS
    P81.9
    )
  • hypothermia due to illness (
    ICD-10-CM Diagnosis Code R68.0

    Hypothermia, not associated with low environmental temperature

      2016 2017 2018 Billable/Specific Code
    Type 1 Excludes
    • hypothermia NOS (accidental) (T68)
    • hypothermia due to anesthesia (T88.51)
    • hypothermia due to low environmental temperature (T68)
    • newborn hypothermia (P80.-)
    R68.0
    )
  • malignant hyperthermia due to anesthesia (
    ICD-10-CM Diagnosis Code T88.3

    Malignant hyperthermia due to anesthesia

      2016 2017 2018 Non-Billable/Non-Specific Code
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5)
    T88.3
    )
  • puerperal pyrexia NOS (
    ICD-10-CM Diagnosis Code O86.4

    Pyrexia of unknown origin following delivery

      2016 2017 2018 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    Applicable To
    • Puerperal infection NOS following delivery
    • Puerperal pyrexia NOS following delivery
    Type 2 Excludes
    • pyrexia during labor (O75.2)
    O86.4
    )
Clinical Information
Codes