B08.3 — Erythema infectiosum [fifth disease]

BillableCC

Is B08.3 billable?

Yes — B08.3 is billable for FY2027. B08.3 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. B08.3 may be submitted for encounters from October 1, 2026 through September 30, 2027.

B08.3 at a glance

Code	B08.3
Description	Erythema infectiosum [fifth disease]
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does B08.3 group to?

B08.3 sits in MDC 18 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

865Viral Illness with MCCmedical
866Viral Illness without MCCmedical

As a secondary diagnosis, B08.3 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is B08.3 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to B08.3. They show the wording a clinician may have documented, which often differs from the Tabular description.

Fifth disease
Megalerythema (epidemic)
Sticker's disease
Disease, diseased › fifth
Disease, diseased › Sticker's
Erythema, erythematous › infectiosum (infectional) (inflammation)
Infection, infected, infective › erythema infectiosum (opportunistic)

Excludes1 — never code together — inherited from B08

The conditions below can never be reported together with B08.3 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

vesicular stomatitis virus disease (A93.8)

Use additional code — inherited from Chapter 1

Report an additional code alongside B08.3 to fully describe the condition. B08.3 is sequenced first.

code to identify resistance to antimicrobial drugs (Z16.-)

Excludes2 — not included here — inherited from Chapter 1

The conditions below are not part of B08.3, but a patient may have both at the same time. When documentation supports it, B08.3 and the excluded code may both 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)

How long has B08.3 existed?

B08.3 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.