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ICD-10-CM Codes
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R00-R99
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
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R50-R69
General symptoms and signs
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Fever of other and unknown origin R50
Fever of other and unknown origin R50-
Type 1 ExcludesType 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 2019 2020 2021 Billable/Specific Code
Type 1 Excludes- chills with fever (R50.9)
R68.83) - febrile convulsions (
ICD-10-CM Diagnosis Code R56.0
Febrile convulsions
2016 2017 2018 2019 2020 2021 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 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
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 2019 2020 2021 Billable/Specific Code Code on Newborn Record
P81.9) - hypothermia due to illness (
ICD-10-CM Diagnosis Code R68.0
Hypothermia, not associated with low environmental temperature
2016 2017 2018 2019 2020 2021 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 2019 2020 2021 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 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
Applicable To- Puerperal infection NOS following delivery
- Puerperal pyrexia NOS following delivery
Type 2 Excludes- pyrexia during labor (O75.2)
O86.4)
Clinical Information
- Fever in which the etiology cannot be ascertained.
Codes
- R50 Fever of other and unknown origin
- R50.2 Drug induced fever
- R50.8 Other specified fever
- R50.81 Fever presenting with conditions classified elsewhere
- R50.82 Postprocedural fever
- R50.83 Postvaccination fever
- R50.84 Febrile nonhemolytic transfusion reaction
- R50.9 Fever, unspecified