Medical Coding Services in California
Every code right. Every claim clean. Every dollar collected.
Your providers deliver the care. We make sure you're paid for all of it. California Billing Services gives physicians, clinics and health groups across the state a team of certified coders who read the full chart, assign ICD-10-CM, CPT and HCPCS codes to the highest supported specificity, and clear Medi-Cal, Medicare and commercial payer edits before a claim ever leaves your office.
AAPC and AHIMA certified coders · Specialty-specific coding teams · Works with your EHR · No long-term contracts
Why Coding Accuracy Decides How Much You Get Paid
Every claim starts with a code. When that code is wrong, incomplete or unsupported by documentation, the payer denies it, downcodes it or flags it for audit. For California practices juggling Medi-Cal managed care plans, Medicare Advantage and commercial PPOs, small coding errors add up to large revenue losses.
Most practices lose revenue in three quiet ways. Undercoding leaves money on the table for work you actually performed. Overcoding and unsupported modifiers invite recoupments and payer audits. Outdated codes and missed annual updates trigger avoidable denials.
Our medical billing and coding services in California close those gaps. Certified coders review every encounter against your documentation, current code sets and payer-specific rules before the claim leaves your office. The result is cleaner claims, fewer denials and revenue that reflects the care you deliver.
Complete Medical Coding Services for California Providers
From a single clinic to a multi-location group, we cover every coding need across professional, outpatient and facility settings.
Medical Coding Analysis Services in California
Not sure where your revenue is leaking? Our medical coding analysis services in California give you a clear, data-backed picture of how your practice codes today and what it costs you.
What the analysis covers
- E/M level distribution compared with specialty benchmarks
- Documentation-to-code match on a random chart sample
- Modifier usage and NCCI bundling errors
- Denial trends tied to coding and medical necessity
- Undercoded and missed charges with estimated revenue impact
- Compliance risk areas that could attract payer or OIG audits
Audit types
- Pre-bill (prospective) audits catch errors before claims go out.
- Retrospective audits review paid claims to find missed revenue and exposure.
- Focused audits target one provider, code range or payer.
Specialty-Specific Coders Who Know Your Workflow
Each specialty has its own code sets, modifiers and payer traps. We assign coders who work in your specialty every day.
Primary Care and Internal Medicine
E/M, preventive visits, chronic care management and annual wellness visits
Cardiology
Diagnostic testing, cath lab, device monitoring and global periods
Orthopedics
Surgical coding, injections, DME and fracture care
Dermatology
Lesion excision, Mohs surgery and cosmetic vs medical separation
Behavioral Health
Psychotherapy time codes, telehealth and add-on codes
OB/GYN
Global maternity packages and high-risk pregnancy coding
Gastroenterology
Endoscopy families, screening vs diagnostic colonoscopy
Urgent Care
High-volume E/M, point-of-care tests and procedure add-ons
Physical Therapy
Timed codes, the 8-minute rule and KX modifier thresholds
Radiology
Professional and technical components, contrast reporting
Anesthesiology
Base units, time units and concurrency modifiers
Pain Management
Injections, nerve blocks and imaging guidance
Cardiology Coding
Cardiology claims fail most often on bundled diagnostic tests, device interrogations and global surgical periods. Our coders separate professional and technical components, apply modifiers 26 and TC correctly and code cath lab procedures from the full procedure report.
Learn more →Orthopedic Coding
Orthopedic revenue depends on precise surgical coding, laterality and fracture care episodes. We code injections, DME and post-op visits within global periods, and we apply 7th-character ICD-10 extensions correctly.
Learn more →Behavioral Health Coding
Psychotherapy codes are time-based and payers audit them closely. We match session time to the right code, add interactive complexity and crisis add-ons when documented, and code telehealth with the correct place of service and modifiers.
Learn more →Dermatology Coding
Dermatology coding hinges on lesion size, margins and pathology results. We code excisions, Mohs stages and repairs accurately and keep cosmetic services separate from billable medical care.
Learn more →Primary Care and Internal Medicine Coding
High visit volume means small E/M errors add up fast. We level visits by medical decision making or time, capture preventive and problem-oriented visits on the same day with modifier 25, and code chronic care management and annual wellness visits.
Learn more →Don't see your specialty? We likely code it. Ask us.
Coding Support for Every Type of California Practice
Solo and Small Practices
Certified coding without the cost of a full-time in-house coder.
Multi-Specialty Groups
Dedicated coders per specialty with one point of contact for the whole group.
Hospitals and Health Systems
Overflow, backlog and professional fee coding when your in-house team is stretched.
Ambulatory Surgery Centers
Facility coding, implant reporting and ASC payment indicator checks.
FQHCs and Community Clinics
Coding for PPS visits, Medi-Cal encounters and sliding-fee workflows.
Telehealth Providers
Correct place-of-service codes, telehealth modifiers and payer-specific virtual visit rules.
Our 6-Step Medical Coding Process
A clear sequence from chart access to monthly reporting keeps every claim accurate, compliant and paid faster.
- 1
Secure chart access
We connect to your EHR or practice management system through HIPAA-compliant, role-based access. No workflow changes on your side.
- 2
Documentation review
A certified coder reads the full encounter note, orders and results, not just the superbill.
- 3
Code assignment
ICD-10-CM, CPT and HCPCS codes and modifiers are assigned to the highest supported specificity.
- 4
Compliance and edit check
Every claim is scrubbed against NCCI edits, MUEs, LCD/NCD policies and payer-specific rules.
- 5
Provider queries
When documentation is unclear, we send a short, compliant query instead of guessing.
- 6
Quality audit and reporting
A second-level QA review samples coded charts, and you receive monthly accuracy and productivity reports.
California Medical Coding Services Built Around Local Payers
Coding for California is not the same as coding anywhere else. Medi-Cal, its managed care plans and the state's large Medicare Advantage market each apply their own billing codes, modifiers and documentation rules. Our coders track these differences so your claims match what each California payer expects.
Payers we code for: Medi-Cal (fee-for-service and managed care plans), Medicare and Noridian Part B, Medicare Advantage plans, Blue Shield of California, Anthem Blue Cross, Kaiser referral claims, Health Net, UnitedHealthcare, Aetna, Cigna and workers' compensation carriers.
Compliance commitments
- HIPAA-compliant processes and a signed Business Associate Agreement
- Alignment with California privacy law, including the CMIA
- Annual ICD-10, CPT and HCPCS updates applied from day one
- Coding done to official guidelines and documented, audit-ready rationale
Coded to each payer's rules, so your claims clear on the first pass, not the third.
Medical Coding Services Across California
Our coders work remotely and securely, so we support practices in every California city and county. Whether you run a clinic in Los Angeles, a surgery center in San Diego or a group practice in Sacramento, you get the same certified team and turnaround.
Los Angeles, Long Beach, Pasadena, Glendale, Santa Monica
Irvine, Anaheim, Santa Ana, Newport Beach, Huntington Beach
San Diego, Chula Vista, Carlsbad, Escondido, Oceanside
Riverside, San Bernardino, Ontario, Temecula, Palm Springs
San Francisco, Oakland, San Jose, Fremont, Walnut Creek
Sacramento, Roseville, Elk Grove, Redding, Chico
Fresno, Bakersfield, Modesto, Stockton, Santa Barbara
Don't see your city? We serve all 58 California counties.
Why California Practices Choose Our Coding Team
Certified, experienced coders
Every coder holds an AAPC or AHIMA credential (CPC, CCS, CRC or COC) and completes ongoing education each year.
24–48 hour turnaround
Charts are coded fast so claims go out on time and cash flow stays steady.
Two-level quality control
A senior auditor reviews a sample of every coder's work before errors can repeat.
Works with your EHR
We code inside Epic, athenahealth, eClinicalWorks, NextGen, AdvancedMD, Kareo/Tebra and other common systems.
Transparent reporting
Monthly dashboards show accuracy, denial rates tied to coding and revenue recovered.
Lower cost than in-house
No hiring, training, benefits or turnover. You pay for coded charts, not idle hours.
"We don't code from the superbill. We code from the chart, and we stand behind every code we assign."
Medical Billing and Coding Services in California, Under One Roof
Coding and billing work best when one team owns both. When your coders and billers sit together, a denied claim goes straight back to the person who coded it, the root cause gets fixed and the same error doesn't repeat next month.
01 · Before the visit
Eligibility checks and prior authorizations02 · After the visit
Accurate coding and clean claim submission
03 · Until it's paid
Denial management, AR follow-up and payment posting
Medical Coding Services FAQs
We handle ICD-10-CM, CPT and HCPCS coding, E/M leveling, modifier review, HCC risk adjustment coding, NCCI edit checks, coding audits and provider documentation feedback.
Can't find what you're looking for? Contact our billing specialists
Stop Losing Revenue to Coding Errors
Most practices don't know what coding errors cost them until someone looks. Let our certified California coding team look for you. We'll audit a sample of your charts, show you exactly where revenue is slipping and hand you a clear plan to recover it. No cost, no obligation, no sales pressure. Call (631) 652-3106 · HIPAA compliant · BAA provided · Response within one business day.