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ICD-10-CM 2027 diagnosis code

R50.8Other specified fever

Not billable — use a more specific code

R50.8 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About R50.8

R50.8 is the ICD-10-CM diagnosis code for other specified fever. It belongs to category R50 (fever of other and unknown origin), block R50-R69 (general symptoms and signs) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within R50, choose R50.8 (Other specified fever) only when documentation doesn't support a more specific option: drug induced fever (R50.2) and fever, unspecified (R50.9).

To report this condition, pick the subcode that matches the documentation: R50.81 (elsewhere), R50.82 (fever), R50.83 (fever) and R50.84 (reaction).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under R50.8

Notes that apply from higher levels

Instructions written at a parent level also apply to R50.8.

› From R50 Fever of other and unknown origin
Excludes1
  • chills without fever (R68.83)
  • febrile convulsions (R56.0-)
  • fever of unknown origin during labor (O75.2)
  • fever of unknown origin in newborn (P81.9)
  • hypothermia due to illness (R68.0)
  • malignant hyperthermia due to anesthesia (T88.3)
  • puerperal pyrexia NOS (O86.4)

Broader instructions also apply from Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about R50.8

Is R50.8 billable?

No. R50.8 is a header code. Report one of its more specific subcodes instead.