Professional-Fee Coding & Billing Compliance
Professional-fee coding is the practice of translating a clinical encounter into the code set that determines how it is documented, billed, audited, and paid. This sub-cluster covers that work as a compliance discipline rather than as a lookup exercise: which code applies, what documentation has to support it, and how the choice is defended when a payer or auditor questions it. Two code sets govern the territory. Current Procedural Terminology (CPT), maintained by the AMA CPT Editorial Panel, supplies the procedure and evaluation-and-management (E/M) codes along with the modifiers that qualify them. HCPCS Level II, maintained by CMS, supplies the codes for items and services CPT does not describe, including add-on codes such as G2211 for visit complexity. Payment policy sits on top of both: the Medicare Physician Fee Schedule sets relative values and payment rules, the National Correct Coding Initiative defines which code pairs may be reported together, and Medicare Administrative Contractors issue local coverage determinations that vary by jurisdiction. Commercial payers frequently diverge from all of it. The 2021 and 2023 revisions to the E/M guidelines reshaped this area substantially, retiring history and physical examination as level-determining elements in favour of medical decision-making or total time on the date of service. That change moved the difficulty from documentation volume to documentation judgment, and it is the reason level selection remains contested even where the rules are written down. Pages in this sub-cluster cover modifier application, E/M level selection, add-on and prolonged-services codes, global-period rules, and the audit exposure attaching to each. They are written for physicians, practice managers and certified coders who have to justify a claim, not for readers looking up a code descriptor.
Guides
False Claims Act in Clinical Trials (31 U.S.C. § 3729): Double-Billing, NCD 310.1, and Research Grants
Legal and operational compliance guide to the federal False Claims Act (31 U.S.C. §§ 3729–3733) in clinical trials and academic medical centers, detailing Medicare NCD 310.1 double-billing risk, Modifiers Q0/Q1, NIH grant effort reporting (2 CFR § 200.430), and CTMS-to-EHR billing controls.
Critical Care Documentation (CPT 99291 & 99292): 3 Clinical Criteria, CPT 75-Min vs. CMS 104-Min Time Rules, and Bundled Procedures
Master Critical Care E/M documentation for CPT 99291 and 99292, including the 3 clinical criteria, CPT 75-minute vs. CMS 104-minute thresholds, and bundled procedures.
Teaching Physician Attestation Rules: CMS 42 CFR § 415.172, Modifiers GC and GE, Primary Care Exception, and Medical Student Notes
Understand CMS Teaching Physician attestation rules under 42 CFR § 415.172, Modifier GC vs. Modifier GE (Primary Care Exception), and medical student E/M verification.
UB-04 Form (CMS-1450): Institutional Form Locators (FL 1–81), Type of Bill, and Clinical Trial Coding
A technical reference to the UB-04 (CMS-1450) institutional claim form, comparing it with the CMS-1500, detailing Form Locators FL 4, FL 18–28, FL 39–41, and FL 42, and mapping clinical trial codes to the 837I.
Interprofessional Consultation (CPT 99446–99452): eConsult Time Thresholds, Consent Rules, and CMS Billing
A complete reference to interprofessional consultation billing under CPT 99446–99449, CPT 99451, CPT 99452, and FQHC HCPCS G0511, including verbal consent, cost-sharing notice, and 14-day exclusion rules.
CPT 98977, 98976, 98978, 98980 & 98981: Remote Therapeutic Monitoring (RTM) Billing Guide
A Medicare coding and compliance reference on Remote Therapeutic Monitoring (RTM) device supply codes (CPT 98976 respiratory, CPT 98977 musculoskeletal, CPT 98978 CBT) and treatment management codes (CPT 98980 and 98981), detailing the 16-day transmission rule, PT/OT/SLP therapy modifier billing, and RTM vs RPM rules.
CPT 99491 & 99437: Physician-Performed Chronic Care Management vs 99490, 99487 & PCM
A Medicare coding and compliance guide to CPT 99491 and add-on CPT 99437 (physician or NPP personally performed Chronic Care Management), detailing the 30-minute threshold, mutual-exclusivity rules with CPT 99490 and Complex CCM 99487, comparison with Principal Care Management (CPT 99424–99427), and concurrent RPM billing.
Clinical Validation Denials: DRG Validation, Sepsis & Malnutrition Downgrades, Medicare HAC Rules, and CDI Defense
Understand clinical validation denials, how payers downgrade MS-DRGs for sepsis, malnutrition, and AKI, Medicare HAC POA rules, and compliant CDI appeal strategies.
CMS NTAP (New Technology Add-On Payment): 42 CFR § 412.87–412.88 Eligibility Criteria, 65% Payment Formula, and Hospital Clinical AI Reimbursement
A regulatory and healthcare reimbursement guide to the CMS Inpatient Prospective Payment System (IPPS) New Technology Add-On Payment (NTAP) pathway (42 CFR § 412.87–412.88), detailing the Newness, Cost, and Substantial Clinical Improvement criteria, the FDA Breakthrough Device alternative pathway, the 65% marginal payment calculation, and hospital clinical AI triage reimbursement.
Revenue Integrity in Healthcare: NAHRI Standards, Charge Capture, Payer Contract Management, and Underpayment Recovery
Complete operational guide to revenue integrity in healthcare: how mid-cycle revenue integrity differs from coding and CDI, chargemaster (CDM) and charge capture audits, payer contract management modeling, and underpayment recovery.
Telehealth Reimbursement: Medicare POS 10 vs. POS 02, Modifiers 95 and 93, and State Coverage vs. Payment Parity Laws
Technical guide to telehealth reimbursement: Medicare POS 10 vs. POS 02 facility differentials, Modifiers 95 and 93, audio-only rules, and state parity laws.
Originating Site vs. Distant Site Telehealth: Place of Service (POS 02 vs. 10), HCPCS Q3014 Facility Fees, and Section 1834(m) Rules
A statutory and coding reference comparing originating site vs. distant site telehealth under Social Security Act § 1834(m) and 42 CFR § 410.78—covering Place of Service (POS) 02 vs. POS 10, HCPCS Q3014 originating site facility fees, CPT Modifiers 95 and 93, and decentralized clinical trial workflows.
Hospital Chargemaster (CDM): UB-04 Revenue Codes, CPT/HCPCS Mapping, Charge Capture Workflows, and 45 CFR Part 180 Compliance
A technical reference to the hospital Charge Description Master (CDM) and clinical charge capture in healthcare, detailing CDM database fields, NUBC 4-digit Revenue Codes, hard-coded vs. soft-coded CPT/HCPCS assignment on UB-04 claims, automated charge capture, and 45 CFR Part 180 price transparency.
Accounts Receivable in Healthcare: How to Calculate Net Collection Rate, Days in A/R, Clean Claim Rate, First Pass Yield, and Cost to Collect
Calculate healthcare accounts receivable KPIs: Net Collection Rate, Days in A/R, Clean Claim Rate, First Pass Resolution Rate, and HFMA MAP Key formulas.
Global Surgical Package: CMS 0, 10, and 90-Day Global Periods, Modifiers, Teaching Physician Rules, and Split/Shared Visits
A comprehensive compliance guide to the Medicare Global Surgical Package (CMS Claims Processing Manual Ch. 12 § 40), covering 000, 010, and 090-day global indicators, postoperative modifiers (24, 25, 57, 58, 78, 79), 42 CFR § 415.172 teaching physician rules, and split/shared E/M billing.
Insurance Eligibility Verification and Patient Financial Clearance: Pre-Registration, MSP 42 CFR Part 411, COB, Propensity to Pay, and Clinical Trial Billing
How insurance eligibility verification and patient financial clearance work in medical billing and clinical research: pre-registration workflows, Medicare Secondary Payer (MSP) 42 CFR Part 411 screening, Coordination of Benefits (COB), propensity-to-pay scoring, and NCD 310.1 clinical trial coverage.
Denial Management in Healthcare: ASC X12 835 CARC/RARC Taxonomy, Root-Cause Prevention, and the 5-Level CMS Appeals Checklist
Technical guide to healthcare denial management: ASC X12 835 CARC/RARC taxonomy, root-cause prevention, and the 5-level CMS Medicare appeals workflow.
Prior Authorization Software: HL7 Da Vinci CRD/DTR/PAS, X12 278 & CMS-0057-F Automation
Technical guide to prior authorization software: HL7 Da Vinci CRD, DTR, and PAS FHIR APIs, ASC X12N 278 EDI, NCPDP ePA, and CMS-0057-F compliance.
Hospital Price Transparency Rule (45 CFR Part 180): Standard Charges, Machine-Readable Files, Shoppable Services, and Payer TiC Comparison
Complete regulatory and informatics guide to the CMS Hospital Price Transparency Rule (45 CFR Part 180): the five required standard charges, Machine-Readable File (MRF) schema, 300 shoppable services, Civil Monetary Penalties, and Payer Transparency in Coverage (TiC) comparison.
CPT 99458: Remote Physiologic Monitoring (RPM) Additional 20-Minute Add-On Code, MUE Limits, and Audit Compliance
Clinical coding and audit compliance guide to AMA CPT 99458 for each additional 20 minutes of monthly Remote Physiologic Monitoring (RPM) treatment management, NCCI Medically Unlikely Edit (MUE) limits, and non-overlapping care management time logs.
AI Medical Coding: Computer-Assisted Coding (CAC) vs. Autonomous Coding, Clinical NLP Pipelines, and OIG Compliance
A clinical informatics and revenue integrity guide to AI medical coding, comparing Computer-Assisted Coding (CAC) and autonomous coding, clinical NLP negation and entity extraction for ICD-10-CM and CPT, and OIG/AHIMA compliance rules.
CPT Category III Codes: Emerging Technology Tracking (XXXXT), Appendix S Clinical AI Taxonomy, and 5-Year Sunset Rules
Technical guide to AMA CPT Category III codes (XXXXT): emerging medical technologies, Appendix S clinical AI taxonomy, 5-year sunset rules, and conversion.
CPT 98975: Remote Therapeutic Monitoring (RTM) Initial Setup, Patient Education, and Billing Compliance
Clinical coding and billing guide to AMA CPT 98975 for Remote Therapeutic Monitoring (RTM) device onboarding, 16-day transmission rules, qualified health care professional eligibility, and EHR workflow documentation.
Medicare Secondary Payer Questionnaire (MSPQ): CMS Chapter 3 Questions, Working Aged & ESRD Rules, COB, and CMS-838
Complete compliance guide to the Medicare Secondary Payer Questionnaire (MSPQ), covering CMS Chapter 3 admission questions, working aged and ESRD rules, COB crossover claims, and Form CMS-838.
CPT 99453: Remote Physiologic Monitoring (RPM) Initial Setup, Patient Education, 16-Day Rule, and CMS Billing
How CPT 99453 works for Remote Physiologic Monitoring (RPM) initial setup and education: once-per-episode rules, the 16-day rule, and EHR audits.
Merit-Based Incentive Payment System (MIPS): MACRA QPP Categories, Scoring, MVPs, and QCDR Registries
An authoritative reference to the CMS Merit-based Incentive Payment System (MIPS) under the MACRA Quality Payment Program (42 CFR Part 414 Subpart O), detailing the four weighted performance categories, composite final scoring, MIPS Value Pathways (MVPs), and Qualified Clinical Data Registry (QCDR) clinical research integration.
HHS Office of Inspector General (OIG) Work Plan: False Claims Act, Stark Law vs. Anti-Kickback Statute, Civil Monetary Penalties, and the 60-Day Overpayment Rule
Regulatory compliance guide to the HHS Office of Inspector General (OIG) Work Plan, False Claims Act (31 U.S.C. 3729), Stark Law vs. Anti-Kickback Statute, Civil Monetary Penalties Law, and the Medicare 60-day overpayment rule (42 CFR 401.305).
CMS RADV Audit (Risk Adjustment Data Validation): 42 CFR § 422.311 Rules, PY 2018 Extrapolation, FFS Adjuster, and HCC Chart Review
What a CMS Risk Adjustment Data Validation (RADV) audit is, 42 CFR § 422.310–311 rules, PY 2018 extrapolation, FFS Adjuster, and HCC chart abstraction.
CPT 99454: Remote Physiologic Monitoring (RPM) Device Supply, the 16-Day Transmission Rule per 30-Day Period, FDA Device Criteria, and CMS Billing Compliance
Technical guide to AMA CPT 99454 for Remote Physiologic Monitoring (RPM): the 16-day transmission rule per 30 days, FDA device criteria, and CMS billing.
ACO REACH Model vs. Medicare Shared Savings Program (MSSP) and BPCI Advanced: Capitation, Benchmarks, Risk Tiers, and Health Equity Rules
Compare the CMS ACO REACH Model against MSSP and BPCI Advanced: Global vs. Professional risk, capitation vs. FFS, benchmarks, and health equity rules.
CPT 99457 and 99458: Remote Physiologic Monitoring (RPM) Treatment Management, 20-Minute Rule, Interactive Communication, and CMS Billing
How to bill and document AMA CPT 99457 and add-on code 99458 for Remote Physiologic Monitoring (RPM) treatment management under the Medicare Physician Fee Schedule, including the 20-minute calendar-month threshold, synchronous interactive communication, and general supervision rules.
Geographic Practice Cost Index (GPCI): Medicare RBRVS Formula, Work/PE/MP RVU Adjustments, and Statutory Floors
How the Centers for Medicare & Medicaid Services (CMS) uses Geographic Practice Cost Indices (GPCIs) across 112 payment localities to adjust Physician Work, Practice Expense, and Malpractice RVUs under the Medicare Physician Fee Schedule.
Letter of Medical Necessity Template and Prior Authorization Appeal Checklist
How to write a Letter of Medical Necessity (LMN) and prior authorization appeal letter using a structured clinical checklist, ICD-10-CM/CPT mapping, and federal ERISA 29 CFR § 2560.503-1 and Medicare 42 CFR Part 405 appeal standards.
Diagnosis Related Group (DRG): MS-DRG vs. APR-DRG Classification, Severity Tiers, and CMS IPPS Rules
How Diagnosis Related Groups (DRGs) classify acute inpatient stays into bundled payment weights, comparing CMS Medicare Severity DRGs (MS-DRGs) under 42 CFR Part 412 with All Patient Refined DRGs (APR-DRGs).
MUE Edits (Medically Unlikely Edits): MAI 1, MAI 2, and MAI 3 Indicators, CMS Tables, and Appeals
How Medicare NCCI Medically Unlikely Edits (MUEs) work, including MAI 1, MAI 2, and MAI 3 adjudication indicators, CMS MUE tables, modifier rules, and appeals.
HCC Coding: CMS Risk Adjustment, RAF Scores, and Model V28
How the CMS Hierarchical Condition Categories (CMS-HCC) risk adjustment model maps ICD-10-CM diagnoses to Risk Adjustment Factor (RAF) scores, enforces clinical hierarchies, and transitions from Model V24 to Model V28.
CDI Specialist: Clinical Documentation Integrity, Compliant Queries, and MS-DRG Accuracy
What a Clinical Documentation Integrity (CDI) specialist does, how ACDIS/AHIMA compliant physician queries work, and how CDI governs MS-DRG CC/MCC accuracy.
CMS-1500 vs. UB-04 (CMS-1450) Claim Form: 837P Professional vs. 837I Institutional Billing Compared
Compare the CMS-1500 (837P) professional claim form and UB-04 / CMS-1450 (837I) institutional claim form across Place of Service, Type of Bill, and coding.
National Correct Coding Initiative (NCCI): PTP Edits, MUEs, Modifier Indicators, and Compliance
How the CMS National Correct Coding Initiative (NCCI) enforces Procedure-to-Procedure (PTP) edits, Medically Unlikely Edits (MUEs), and modifier bypass rules.
CAQH ProView (CAQH Provider Data Portal): Credentialing, 120-Day Attestation, and Payer Enrollment
How CAQH ProView (now the CAQH Provider Data Portal) centralizes multi-payer provider credentialing, enforces the 120-day re-attestation cycle, interacts with NCQA Primary Source Verification and CMS PECOS, and supports clinical research site operations.
Advance Beneficiary Notice (ABN): Form CMS-R-131 Issuance Checklist, Options, and Modifiers
An Advance Beneficiary Notice of Noncoverage (ABN, Form CMS-R-131) is the standardized written notice providers and suppliers issue to Original Medicare beneficiaries before furnishing an item or service expected to be denied as not reasonable and necessary, shifting financial liability when properly executed.
Healthcare Revenue Cycle Management (RCM): HIPAA X12 Standards, Clinical Coding, and Research Billing Compliance
A technical reference on healthcare revenue cycle management (RCM), covering front-, mid-, and back-end workflows, HIPAA 45 CFR Part 162 ASC X12 005010 EDI transactions, clinical code sets, and clinical trial billing segregation.
