ICD-10 B06.01
Billable / Specific MCCRubella encephalitis
About ICD-10-CM B06.01
ICD-10-CM code B06.01 represents Rubella encephalitis. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block B06). The 2026 edition of ICD-10-CM B06.01 became effective on October 1, 2025.
Coding Tips for B06.01
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
B06.01 is designated MCC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-MCC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag MCC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under B06.01. Per CMS ICD-10-CM Tabular 2026.
- Rubella meningoencephalitis
Inpatient DRG Impact, MCC
codes Rubella encephalitis. As a Major Complication/Comorbidity (MCC), this can shift the DRG assignment to a higher-weighted category, substantial reimbursement impact.
Medicare LCD Coverage for B06.01
Local Coverage Determinations (LCDs) from CMS MACs that list B06.01 as a covered diagnosis.
Showing top 10 of 67 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B06.01.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with B06.01
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 95929 CMS LCD: Billing and Coding: Neurophysiology Evoked Potentials (NEPs) CMS LCD
- 92651 CMS LCD: Billing and Coding: Neurophysiology Evoked Potentials (NEPs) CMS LCD
- 92653 CMS LCD: Billing and Coding: Neurophysiology Evoked Potentials (NEPs) CMS LCD
- 95928 CMS LCD: Billing and Coding: Neurophysiology Evoked Potentials (NEPs) CMS LCD
- 95930 CMS LCD: Billing and Coding: Neurophysiology Evoked Potentials (NEPs) CMS LCD
- 92652 CMS LCD: Billing and Coding: Neurophysiology Evoked Potentials (NEPs) CMS LCD
- 95939 CMS LCD: Billing and Coding: Neurophysiology Evoked Potentials (NEPs) CMS LCD
- 95708 CMS LCD: Billing and Coding: Special Electroencephalography CMS LCD
- 95721 CMS LCD: Billing and Coding: Special Electroencephalography CMS LCD
- 95719 CMS LCD: Billing and Coding: Special Electroencephalography CMS LCD
Convert B06.01 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 |
|---|---|---|
| B06.01 | 05601 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To B06.01
Other codes in section B00-B09 (Viral infections characterized by skin and mucous membrane lesions).
ICD-10 B06.01, Billing FAQ
Is ICD-10 code B06.01 billable? +
Yes, B06.01 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to B06.01? +
ICD-10 B06.01 includes: Rubella meningoencephalitis.
Is B06.01 a CC or MCC for inpatient DRG? +
Yes, this code is designated as MCC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with B06.01? +
Procedures frequently paired with B06.01 include: 95929, 92651, 92653, 95928, 95930.
What ICD-9 codes does B06.01 map to? +
Per CMS GEMs, B06.01 maps to ICD-9 codes: 05601. 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 May 31, 2026.
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