ICD-10 B08.3
Billable / Specific CCErythema infectiosum [fifth disease]
About ICD-10-CM B08.3
ICD-10-CM code B08.3 represents Erythema infectiosum [fifth disease]. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block B08). The 2026 edition of ICD-10-CM B08.3 became effective on October 1, 2025.
Coding Tips for B08.3
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
B08.3 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inpatient DRG Impact, CC
codes Erythema infectiosum [fifth disease]. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for B08.3
Local Coverage Determinations (LCDs) from CMS MACs that list B08.3 as a covered diagnosis.
Showing top 10 of 13 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B08.3.
1 Medicare
Convert B08.3 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| B08.3 | 0570 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To B08.3
Other codes in section B00-B09 (Viral infections characterized by skin and mucous membrane lesions).
ICD-10 B08.3, Billing FAQ
Is ICD-10 code B08.3 billable? +
Yes, B08.3 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
Is B08.3 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with B08.3? +
Procedures frequently paired with B08.3 include: J2791, J2792.
What ICD-9 codes does B08.3 map to? +
Per CMS GEMs, B08.3 maps to ICD-9 codes: 0570. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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