2027 ICD-10-CM Diagnosis Code B08.3Erythema infectiosum [fifth disease]
ICD-10-CM Codes›A00–B99›B00-B09›B08
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
B08.3 is a billable ICD-10-CM diagnosis code for erythema infectiosum [fifth disease]. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 865 through 866. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 2 closely related codes. Coders also document this condition as disease caused by Parvoviridae. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Disease caused by Parvoviridae
- Infection caused by Erythroparvovirus
- Primate erythroparvovirus 1 infection
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to B08.3: its own notes plus those printed at B08 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- diseases generally recognized as communicable or transmissible
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disease, diseased See Also: Syndrome;
fifth B08.3
Fifth disease B08.3
Megalerythema (epidemic) B08.3
Sticker's disease B08.3
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Erythema Infectiosum
contagious infection with human parovirus b19 most commonly seen in school age children and characterized by fever, headache, and rashes of the face, trunk, and extremities. it is often confused with rubella.
Patient EducationClinical
Fifth Disease
Fifth disease, also called erythema infectiosum, is a viral infection caused by parvovirus B19. This virus only infects people; it's not the same type of parvovirus that dogs and cats can get.
The full article covers:
- What is fifth disease?
- What causes fifth disease?
- What are the symptoms of fifth disease?
- How is fifth disease diagnosed?
- What are the treatments for fifth disease?
- Can fifth disease be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B08.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B08.3Overview
What is the ICD-10 code for erythema infectiosum [fifth disease]?
The ICD-10-CM code for erythema infectiosum [fifth disease] is B08.3 (sometimes written as B083). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is B08.3 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report erythema infectiosum [fifth disease] on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does B08.3 group to?
When erythema infectiosum [fifth disease] is the principal diagnosis on an inpatient stay, it groups to MS-DRG 866, 865, with relative weights from 0.8691 to 1.3153 depending on complications. Higher weights mean higher Medicare reimbursement.
Is B08.3 a CC or MCC?
CMS lists B08.3 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 2 closely related codes in its exclusion list.
Can B08.3 be reported with A93.8?
Not as a rule. The Excludes1 note at B08, which applies to B08.3, lists "vesicular stomatitis virus disease (A93.8)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
