Marinella Villanueva
@marinellavillanueva
I’m a senior medical coder focused on accurate ICD-10/CPT coding, HCC QA, and denials reduction through chart-driven reviews.
What I'm looking for
I’m a medical coding professional with a long record of accurate, compliant coding across Emergency, outpatient, and ancillary services. I’ve assigned and audited ICD10 CM & CPT, and also work with ICD9 & HCPCS when needed to keep claims correct and complete.
At DCH Health System (ED, Clinics, Ancillary), I’ve been responsible for accurate ICD10 CM & CPT code assignment, including complex trauma cases, maintaining a coding accuracy rate of 96% and meeting or exceeding productivity benchmarks. I’ve also reduced coding-related denials/edits through productive review and corrections.
My experience extends into HCC QA work and coding optimization—assigning ICD10 codes for HCC diagnoses for outpatient and inpatient encounters and extracting diagnosis using processing software. I take pride in provider-facing education and compliance, including documentation guidance and adherence to coding rules for State Medicaid plans and CMS, using tools like EPIC and specialty encoder platforms.
Experience
Work history, roles, and key accomplishments
Medical Coder
DCH Health System
Jan 2014 - Present (12 years 4 months)
Assigned accurate ICD-10-CM and CPT codes for ED, clinic, and ancillary encounters, including complex trauma cases. Maintained a 96% coding accuracy rate, met/exceeded productivity benchmarks, and reduced coding-related denials and edits through timely review and corrections.
HCC QA Coder
Alltypeshim LLC
Jan 2017 - Jan 2018 (1 year)
Assigned ICD-10 codes for HCC diagnosis for outpatient and inpatient encounters across Anthem, BCBS, Aetna, and Premera. Extracted diagnoses using processing software that suggests diagnoses based on progress-note text.
Ancillary Coder
Excite Health Partners
Jan 2016 - Jan 2017 (1 year)
Read and abstract physician notes from radiology and laboratory reports to apply correct ICD and CPT codes for ancillary encounters.
Outpatient Coder
Garden Grove Hospital
Jan 2013 - Jan 2014 (1 year)
Assigned ICD-9 codes and procedures for emergency and outpatient encounters, including E&M with I&I, HCPCS, ancillary labs/radiology, OBS perinatal, wound care, and same-day surgery. Resolved denials/claims and NCCI edits and communicated with providers for missing documentation.
ED & Ancillary Coder
Kiwitek LLC
Jan 2012 - Jan 2014 (2 years)
Assigned diagnosis and procedure codes, including CPT and E&M with I&I and related emergency department procedure coding, according to appropriate classification rules.
ED & Ancillary Coder
Accurate Coding Services Inc.
Jan 2012 - Jan 2013 (1 year)
Assigned ICD-9 and CPT codes for emergency, ancillary, and radiology accounts supporting Mission Hospital workflows.
Coder, Auditor, QA
Kaiser Permanente
Jan 2008 - Jan 2013 (5 years)
Assigned and audited ICD-9, CPT, and HCPCS codes across multiple specialties (e.g., gastroenterology, family medicine, urology, cardiology, OB, and surgery) using EPIC and computerized patient records. Extracted HCC diagnoses using clinical NLP software, educated providers on proper documentation, and ensured compliance with coding rules for Medicaid state programs and CMS.
Education
Degrees, certifications, and relevant coursework
Hope of St James
Certification, Medical Coding
Completed a certification for medical coding at Hope of St James.
La Puente Adult School
Certification, Medical Billing & Coding
Completed a certification for medical billing and coding at La Puente Adult School.
Preferred College of Nursing
Certification, Nursing Assistant & Home Health Aide
Completed training/certification for nursing assistant and home health aide at Preferred College of Nursing.
Philippines
Bachelor of Science, Foreign Service
Earned a Bachelor of Science in Foreign Service in the Philippines.
Availability
Location
Authorized to work in
Job categories
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