Term: International Classification of Diseases, 9th Revision, with Clinical Modifications (ICD-9-CM)

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Glossary Definition

Last Updated: 2015-01-21

Definition:

The 9th version of the ICD (International Classification of Disease) coding system (with Clinical Modifications), developed by the World Health Organization (WHO) that is used to classify diseases, health conditions and procedures. This version was used extensively in Canadian hospitals for recording diagnoses and procedures in hospital discharge abstracts.

ICD-9-CM is divided into 17 chapters. Individual codes are at least three digits, up to a maximum of five digits, depending on the specificity required. For the majority of codes, numeric values are used. Two additional categories include E-codes (external cause of injury) and V-codes (supplemental classification of factors influencing health).

As of April 1, 2004, Manitoba hospitals replaced ICD-9-CM with ICD-10-CA for coding diagnoses and the Canadian Classification of Health Interventions (CCI) for coding procedures/interventions.

For specific ICD-9-CM codes related to individual diagnoses, other medical conditions or procedures/interventions, please click on the links in the Related concepts and Related terms sections below.

Related concepts 

• Ambulatory Care Sensitive (ACS) Conditions
• Arthritis - Measuring Prevalence
• Asthma - Measuring Prevalence
• Attention-Deficit Hyperactivity Disorder (ADHD)
• Autism Spectrum Disorder (ASD) - Measuring Treatment Prevalence
• Caesarean Section / Cesarean Section (C-Section)
• Cardiac Catheterization / Diagnostic Angiogram
• Cataract Surgery
• Charlson Comorbidity Index
• Chlamydia - Method of Identification
• Congenital Anomalies
• Congestive Heart Failure (CHF)
• Dementia - Measuring Prevalence
• Depression - Defining in Administrative Data
• Diabetes - Measuring Prevalence
• Elixhauser Comorbidity Index
• End Stage Kidney Disease (ESKD)
• Gonorrhea - Method of Identification
• Hepatitis B - Method of Identification
• Human Immunodeficiency Virus (HIV) - Method of Identification
• Hypertension - Measuring Prevalence
• Hysterectomy
• ICD-10 to ICD-9-CM Conversion
• Infant Illness/Trauma
• International Classification of Disease (ICD) Coding in MCHP Data
• Ischemic Heart Disease (IHD) / Coronary Heart Disease (CHD) - Measuring Prevalence
• Measures of Comorbidity
• Mood and Anxiety Disorders - Measuring Prevalence
• Morbidity Classification System in Children
• Osteoporosis - Measuring Prevalence
• Personality Disorders - Measuring Prevalence
• Schizophrenia - Measuring Prevalence
• Stroke - Measuring Prevalence
• Substance Use Disorders / Substance Abuse - Measuring Prevalence
• Suicide and Attempted Suicide (Intentional Self Inflicted Injury)
• Syphilis - Method of Identification
• Teenage Pregnancy / Teen Pregnancy
• Total Respiratory Morbidity (TRM) - Measuring Prevalence
• Tuberculosis (TB) - Method of Identification
• Vital Statistics - Use of ICD-9 Codes Identifying Cause of Death

Related terms 

• Acute Myocardial Infarction (AMI)
• Admission Diagnosis
• All Injuries
• Alzheimer / Dementia Disorders
• Ambulatory Diagnostic Groups (ADG)
• Antepartum Hemorrhage
• Assisted Vaginal Birth
• Autism Spectrum Disorder (ASD)
• Canadian Classification of Diagnostic, Therapeutic, and Surgical Procedures (CCP)
• Cancer Incidence
• Cardiac Catheterization (Diagnostic Angiogram)
• Carotid Endarterectomy
• Carpal Tunnel Release
• Charlson Comorbidity Index
• Cholecystectomy
• Chronic Obstructive Pulmonary Disease (COPD)
• Conditions
• Congenital Anomalies
• Coronary Artery Bypass Graft (CABG) / Surgery
• Coronary Heart Disease (CHD)
• Depression
• Diabetes / Diabetes Mellitus
• Diagnosis
• Ectopic Pregnancy
• Elixhauser Comorbidity Index
• External Cause of Injury Codes
• Falls
• Fetal Alcohol Syndrome (FAS)
• Fluid and Electrolyte Imbalances
• Gastrointestinal Complications
• Heart Valve Surgery
• Hemorrhoidectomy
• Hernia Repair
• Hip Fracture
• Hip Fracture Repair
• Hip Replacement Surgery
• Hospital Abstracts Data
• Hospitalization Rates for Injuries
• Hysterectomy
• ICD Conversion Files
• ICD-10-CA
• ICD-9-CM
• Induced Abortion
• Induction of Labour
• Infant Illness/Trauma
• Infant Mortality
• Infertility Treatment Prevalence
• Inflammatory Bowel Disease (IBD)
• Influenza Vaccinations / Influenza Immunization
• Influenza-Associated Illnesses
• Injury Hospitalizations
• Injury Indicators
• International Classification of Diseases (ICD)
• International Classification of Diseases (ICD) Chapters
• International Classification of Diseases, 10th Revision, with Canadian Enhancements (ICD-10-CA)
• Ischemic Heart Disease (IHD)
• Knee Replacement Surgery
• Lower Limb Amputations with Comorbid Diabetes
• Lower Respiratory Tract Infection (LRTI)
• Maternal Psychological Distress
• Multiple Birth
• Multiple Sclerosis (MS)
• Neonatal Hospital Readmission
• Newborn Readmission Rate
• Non-Hip Fractures
• Non-Psychotic Disorder
• Other Mental Health Disorders
• Percutaneous Coronary Interventions (PCI) / Angioplasty
• Pneumonia
• Post-Acute Myocardial Infarction (AMI) Care: Beta-Blocker Prescribing
• Postpartum Psychological Distress
• Prenatal Psychological Distress
• Psychotic Disorders
• Renal Failure Treatment Prevalence
• Respiratory Disease Mortality
• Respiratory Infections
• Seizure Disorders (Chronic Disease Algorithm)
• Selected Chronic Disease Indicators
• Singleton Birth
• Skin Ulcers
• Sterilization
• Stroke Incidence (Hospitalization or Death)
• Teenage Pregnancy Rate
• Tonsillectomy / Adenoidectomy Rates
• Transurethral Prostatectomy (TURP)
• Tuberculosis (TB)
• Type I Diabetes Mellitus
• Vaccine-Preventable Infections
• Vaginal Birth After Caesarean Section (VBAC) Rate
• World Health Organization (WHO)

Links 

• Centers for Disease Control and Prevention Web Site - ICD-9-CM
• On-Line ICD-9-CM Search Tool (http://icd9.chrisendres.com/)

References 

• Doupe M, Brownell M, Kozyrskyj A, Dik N, Burchill C, Dahl M, Chateau D, De Coster C, Hinds A, Bodnarchuk J. Using Administrative Data to Develop Indicators of Quality Care in Personal Care Homes. Winnipeg, MB: Manitoba Centre for Health Policy, 2006. [Report] [Summary] [Additional Materials] (View)
• Finlayson G, Leslie WD, MacWilliam L. Diagnostic Imaging Data in Manitoba: Assessment and Applications. Winnipeg, MB: Manitoba Centre for Health Policy, 2004. [Report] [Summary] (View)
• Frohlich N, Katz A, De Coster C, Dik N, Soodeen RA, Watson D, Bogdanovic B. Profiling Primary Care Physician Practice in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2006. [Report] [Summary] (View)
• Katz A, De Coster C, Bogdanovic B, Soodeen R, Chateau D. Using Administrative Data to Develop Indicators of Quality in Family Practice. Winnipeg, MB: Manitoba Centre for Health Policy, 2004. [Report] [Summary] (View)

Term used in 

• Brownell M, De Coster C, Penfold R, Derksen S, Au W, Schultz J, Dahl M. Manitoba Child Health Atlas Update. Winnipeg, MB: Manitoba Centre for Health Policy, 2008. [Report] [Summary] [Additional Materials] (View)
• Chartier M, Finlayson G, Prior H, McGowan K, Chen H, de Rocquigny J, Walld R, Gousseau M. Health and Healthcare Utilization of Francophones in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] (View)
• De Coster C, Chateau D, Dahl M, Soodeen RA, McKeen N. Waiting Times for Surgery, Manitoba 1999/2000 to 2003/04. Winnipeg, MB: Manitoba Centre for Health Policy, 2007. [Report] [Summary] (View)
• Garland A, Fransoo R, Olafson K, Ramsey C, Yogendran M, Chateau D, McGowan K. The Epidemiology and Outcomes of Critical Illness in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] (View)
• Heaman M, Kingston D, Helewa M, Brownell M, Derksen S, Bogdanovic B, McGowan K, Bailly A. Perinatal Services and Outcomes in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] [Updates and Errata] (View)
• Hilderman T, Katz A, Derksen S, McGowan K, Chateau D, Kurbis C, Allison S, Reimer JN. Manitoba Immunization Study. Winnipeg, MB: Manitoba Centre for Health Policy, 2011. [Report] [Summary] (View)
• Lix L, Smith M, Azimaee M, Dahl M, Nicol P, Burchill C, Burland E, Goh C, Schultz J, Bailly A. A Systematic Investigation of Manitoba's Provincial Laboratory Data. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] (View)