Part-Time Medical Coding Jobs

Part-time medical coding jobs at Rex.zone connect traditional ICD-10, CPT, and HCPCS assignment with AI/ML training pipelines. As a medical coding specialist entity, you’ll perform data labeling on clinical notes, apply annotation guidelines compliance, and contribute to training data quality for clinical NLP, large language model evaluation, and prompt evaluation. Roles span remote, contract, and freelance opportunities with flexible hours. Your coding, audit, and QA evaluation work improves model performance improvement for revenue cycle integrity and decision support. This page helps you explore, compare, and apply to openings across AI labs, tech startups, BPOs, annotation vendors, and health systems on Rex.zone. Tasks may include named entity recognition for diagnoses and procedures, computer vision annotation for radiology studies, and content safety labeling via PHI redaction.

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About the Role

Join Rex.zone as a part-time medical coder contributing to clinical NLP and LLM training workflows. You will assign ICD-10-CM, CPT, and HCPCS codes, validate documentation, and create high-quality labeled datasets used by AI labs and health systems. Your expertise supports model evaluation, RLHF-driven preference ratings on code suggestions, and audit readiness for payers while maintaining HIPAA compliance.

Key Responsibilities

Perform accurate code assignment (ICD-10, CPT, HCPCS); review EHR documentation for medical necessity; execute annotation guidelines compliance; create and QA labeled examples to improve training data quality; conduct large language model evaluation and prompt evaluation for code recommendations; run QA evaluation on coder outputs; contribute to named entity recognition projects; assist computer vision annotation for radiology; participate in content safety labeling and PHI redaction; document edge cases and escalate ambiguities.

Required Skills

Certified Professional Coder (CPC) or CCS/CRC preferred; strong knowledge of payer rules, modifiers, DRGs, and revenue cycle; experience with EHRs and clinical documentation; attention to detail; familiarity with annotation tools and spreadsheets; comfort with LLM-assisted workflows and RLHF feedback loops; understanding of HIPAA, de-identification, and compliance protocols.

Preferred Experience

Background in outpatient, inpatient, pro-fee, anesthesia, radiology, pathology, or specialty coding; experience with HL7 FHIR and SNOMED CT; prior data labeling or NER projects; exposure to model performance improvement cycles; ability to write clear rationales for code choices and flag guideline deviations.

Work Arrangements & Openings

Flexible part-time shifts with remote, contract, and freelance roles; options for full-time conversion; openings at AI labs, tech startups, BPOs, annotation vendors, and health systems; roles across NLP, computer vision, content safety, and LLM training; entry-level and senior tracks available with mentorship and QA support.

Tools & Platforms

Use Rex.zone for job discovery, project onboarding, and workflow tracking; collaborate in secure environments with EHR viewers, labeling tools, and LLM evaluation dashboards; follow versioned annotation guidelines and audit trails to ensure data integrity and compliance.

Compensation & Benefits

Competitive hourly pay with performance bonuses tied to accuracy and throughput; opportunities for training stipends, certification support, and priority access to high-value projects; rates vary by specialization, experience, and employer type.

How to Apply

Create a Rex.zone profile, upload certifications (CPC, CCS, CRC), list specialties, and complete a brief skills assessment; indicate availability for remote, contract, freelance, or full-time; explore matched roles and apply directly; expect a coding test and compliance check.

Compliance & Ethics

Strict adherence to HIPAA and organizational policies; PHI handling through secure portals; de-identification and content safety labeling; transparent documentation of coding rationales; ongoing audits to sustain guideline fidelity and regulatory readiness.

Frequently Asked Questions

  • Q: What is a part-time medical coding role at Rex.zone?

    It’s a flexible coding position where you assign and audit ICD-10, CPT, and HCPCS codes while contributing to AI/ML workflows such as data labeling, NER, QA evaluation, and large language model evaluation.

  • Q: Are these jobs remote?

    Yes. Most roles are remote and offer contract or freelance schedules. Some employers also provide full-time options after successful project performance.

  • Q: Do I need a certification?

    Certifications like CPC, CCS, or CRC are preferred and often required. Entry-level candidates may be considered if they pass skill assessments and follow annotation guidelines compliance.

  • Q: How does medical coding connect to RLHF and LLM training?

    You review model-generated code suggestions, rate correctness, and provide rationales. These preference signals power RLHF and improve model performance on coding tasks.

  • Q: What schedules are available?

    Part-time shifts vary by project, typically 10–25 hours per week, with options for evenings and weekends. Some roles allow scaling up to full-time.

  • Q: What pay can I expect?

    Rates depend on specialty and employer type (AI labs, tech startups, BPOs, vendors). Competitive hourly compensation with bonuses for accuracy, throughput, and model performance improvement contributions.

  • Q: What tools will I use?

    Secure EHR viewers, labeling platforms, LLM evaluation dashboards, and QA tools provided via Rex.zone and employer systems. Training is offered for workflow and compliance.

  • Q: Is there room for career growth?

    Yes. You can advance to senior coder, QA lead, guideline author, or AI annotation specialist across NLP, computer vision annotation, and content safety labeling projects.

  • Q: How does Rex.zone protect PHI?

    Projects run in secure, audited environments with strict access controls, de-identification, PHI redaction, and compliant data handling policies.

  • Q: How do I get started?

    Create a Rex.zone profile, upload credentials, complete assessments, and apply to matched listings. You’ll receive onboarding instructions and project-specific guidelines.

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50+Countries Represented

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We believe exceptional intelligence deserves exceptional pay. Our platform consistently offers rates above the industry average, rewarding experts for their true value and real impact on frontier AI. Here, your expertise isn't just appreciated—it's properly compensated.

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