Coding Tips
Modifier Compliance Guide for Medical Billing Teams
Modifier compliance links CPT code accuracy, documentation, payer edits, and clean claim submission.
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MMBS Billing Author
Sofia Reyes, CPC, CPMA
Coding Compliance Specialist · 10+ years
Sofia Reyes is a CPC and CPMA-certified medical billing specialist with 10+ years of experience in process design and coding compliance. She specializes in CPT and ICD-10 coding audits, HIPAA compliance programs, and workflow optimization for specialty practices. Sofia holds active AAPC certifications and develops MMBS coding compliance programs and internal audit protocols.
Credentials:
CPC
CPMA
Articles by Sofia Reyes, CPC, CPMA
Medical billing guides, code references, and compliance articles authored by Sofia Reyes, CPC, CPMA.
Compliance
California Medical Billing Regulations for Physician Practices
California billing regulations require Medi-Cal, commercial payer, telehealth, and documentation controls.
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Compliance
Fraud, Waste, and Abuse Prevention in Medical Billing: OIG Compliance Rules, False Claims Act, and Upcoding Red Flags
OIG audits, False Claims Act liability, and upcoding penalties can devastate a practice. Learn the compliance rules MMBS uses to keep claims clean and defensible.
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Compliance
HIPAA Audit Preparation Guide for Medical Billing Operations: OCR Enforcement, Risk Analysis, and BAA Requirements
OCR HIPAA audits can result in fines from $100 to $50,000 per violation. This guide covers risk analysis, BAA requirements, and Security Rule safeguards for billing operations.
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Coding Tips
ICD-10 Code I10 Essential Hypertension: Medical Billing Guide, Documentation Rules, and CMS HCC Risk Adjustment
ICD-10 code I10 (essential primary hypertension) is one of the most billed diagnosis codes in primary care. Learn correct documentation, CPT pairing, and HCC risk adjustment rules.
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Practice Management
What Is an EOB (Explanation of Benefits) in Medical Billing? Complete Guide for Physician Practices
An EOB tells you what was billed, allowed, paid, and owed. Learn to read CARC codes, ERA vs EOB differences, and catch underpayments before they expire.
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Compliance
How to Build a Medical Coding Compliance Program for Physician Practices: OIG-Aligned Framework and HIPAA Requirements
An OIG-aligned coding compliance program protects your practice from audits, reduces claim denials, and keeps revenue cycle management running clean.
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Coding Tips
CPT Modifier 25 in Medical Billing: When to Append, Documentation Requirements, and CMS Payer Rules
CPT Modifier 25 protects same-day E/M revenue but is among the most audited modifiers in medical billing. Here is the complete compliance guide.
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Practice Management
What Is a Superbill in Medical Billing? Definition, Template, and Physician Practice Guide
A superbill is the foundational billing document for every patient encounter. Learn what it must contain, how to avoid the most costly errors, and how MMBS builds cleaner claims.
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Coding Tips
ICD-10 E11.9 Type 2 Diabetes Billing Guide for 2026
Master ICD-10 E11.9 Type 2 Diabetes billing in 2026. Documentation rules, HCC impact, payer policies, denial prevention, and MMBS's 98.2% clean claim rate advantage.
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