2024 ICD-10-CM Diagnosis Code B08.20

Exanthema subitum [sixth disease], unspecified

  • B08.20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM B08.20 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of B08.20 – other international versions of ICD-10 B08.20 may differ.

ADICD-10-CM Coding Rules

  • B08.20 is applicable to pediatric patients aged 0 – 17 years inclusive.

Applicable To

  • Roseola infantum, unspecified

The following code(s) above B08.20 contain annotation back-references

 that may be applicable to B08.20:

  • A00-B99  Certain infectious and parasitic diseases
  • B08  Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified
  • B08.2  Exanthema subitum [sixth disease]

Approximate Synonyms

  • Exanthema subitum
  • Roseola infantum

Clinical Information

  • An acute, short-lived, viral disease of infants and young children characterized by a high fever at onset that drops to normal after 3-4 days and the concomitant appearance of a macular or maculopapular rash that appears first on the trunk and then spreads to other areas. It is the sixth of the classical exanthematous diseases and is caused by hhv-6; (herpesvirus 6, human). (from Dorland, 27th ed)

ICD-10-CM B08.20 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems
  • 865 Viral illness with mcc
  • 866 Viral illness without mcc

Convert B08.20 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to B08.20: