Medical billing abbreviations

ABN: Advance Beneficiary Notice of Non-coverage
ADA: American Dental Association
ALJ: Administrative Law Judge
AMA: American Medical Association
ANSI: American National Standards Institute
ASA: American Society of Anesthesiologists
ASC: Ambulatory Surgical Center
BBA: Balanced Budget Act
CAH: Critical Access Hospital
CCI: refer to NCCI
CCN: Correspondence Control Number
CDE: Certified Diabetic Educators
CLIA: Clinical Laboratory Improvement Amendments
CMD: Contractor Medical Director
CMHC: Community Mental Health Center
CMN: Certificate of Medical Necessity
CMR: Comprehensive Medical Review
CMS: The Centers for Medicare & Medicaid Services
CNM: Certified Nurse Midwife
CNMW: Certified Nurse Midwife
CNS: Certified Nurse Specialist
COB: Coordination of Benefits
CORF: Comprehensive Outpatient Rehabilitation Facility
CPT: Current Procedural Terminology
CRD: Chronic Renal Disease
CRNA: Certified Registered Nurse Anesthetist
CWF: Common Working File
DHHS: Department of Health & Human Services
DME: Durable Medical Equipment
DOB: Date of Birth
DOS: Date of Service
DX: Diagnosis/Diagnoses
ECF: Extended Care Facility
EDI: Electronic Data Interchange
EIN: Employer Identification Number (Tax ID)
EKG: Electrocardiogram
E/M: Evaluation and Management
EOB: Explanation of Benefits
ERA: Electronic Remittance Advice
ESRD: End Stage Renal Disease
FDA: Food and Drug Administration
HICN: Health Insurance Claim Number
HIPAA Health Insurance Portability and Accountability Act
HMO: Health Maintenance Organization
HPSA: Health Professional Shortage Area
ICD-9-CM: Internal Classification of Diseases-9th Edition
ICU: Intensive Care Unit
LMRP: Local Medical Review Policy
MSN: Medicare Summary Notice
MSP: Medicare Secondary Payer
NCCI: National Correct Coding Initiative
NON-PAR: Non-Participating Provider
NPI: National Provider Identifier
POS: Place of Service or Point of Service Option
PPO: Preferred Provider Organization
PQRI: Physician Quality Reporting Initiative
RA: Remittance Advice
SNF: Skilled Nursing Facility
SSN: Social Security Number
TOS: Type of Service