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Basic terms to know for ICD-10-CM & ICD-10-PCS

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Term
Definition
ICD-10-CM   INTERNATIONAL CLASSIFICATION OF DISEASES, TENTH REVISION, CLINICAL MODIFICATION, CONSISTS OF DIAGNOSIS CODES  
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ICD-10-PCS   INTERNATIONAL CLASSIFICATION OF DISEASES, TENTH REVISION, PROCEDURE CODING SYSTEM; CONSISTS OF PROCEDURE CODES  
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NEC   NOT ELSEWHERE CLASSIFIED; USED IN THE ALPHABETIC INDEX TO INDICATE THAT THERE IS NO SEPARATE CODE FOR THE CONDITION EVEN THOUGH THE DIAGNOSTIC STATEMENT IS SPECIFIC  
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NOS   NOT OTHERWISE SPECIFIED; EQUIVALENT TO THE TERM "UNSPECIFIED"  
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MS-DRG SYSTEM   MEDICARE SEVERITY-ADJUSTED DIAGNOSIS-RELATED GROUPS SYSTEM; A PATIENT CLASSIFICATION SYSTEM USED IN HOSPITAL INPATIENT REIMBURSEMENT  
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OTHER REPORTABLE DIAGNOSESS   CONDITIONS THAT COEXIST AT THE TIME OS ADMISSION, DEVELOP SUBSEQUENTLY, OR AFFECT PATIENT CARE DURING THE HOSPITAL STAY  
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PRINCIPAL DIAGNOSIS   THE CONDITION ESTABLISHED AFTER STUDY THAT IS CHIEFLY RESPONSIBLE FOR ADMISSION OF THE PATIENT TO THE HOSPITAL  
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UHDDS   UNIFORM HOSPITAL DISCHARGE DATA SET; INFORMATION USED FOR REPORTING INPATIENT DATA  
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POA INDICATOR   PRESENT ON ADMISSION INDICATOR; A DATA ELEMENT THAT APPLIES TO DIAGNOSIS CODES FOR CLAIMS INVOLVING INPATIENT CARE  
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PROVIDER   A PHYSICIAN OR ANY QUALIFIED EALTH CARE PRACTITIONER (SUCH AS A NURSE PRACTITIONER OR PHYSICIAN ASSISTANT)WHO IS LEGALLY ACCOUNTABLE FOR ESTABLISHING THE PATIENT'S DIAGNOSIS  
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ALPHABETIC INDEX OF DISEASES AND INJURIES AND THE INDEX TO EXTERNAL CAUSES   INCLUDE ENTRIES FOR MAIN TERMS (DISEASES, CONDITIONS, OR INJURIES) AND SUBTERMS (SITE, TYPE, OR ETIOLOGY). THE NEOPLASM TABLE, AND THE TABLE OF DRUGS AND CHEMICALS  
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NEC   NOT OTHERWISE CLASSIFIED  
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NOS   NOT OTHERWISE SPECIFIED  
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"RULE OUT"   INDICATES THAT A DIAGNOSIS IS STILL POSSIBLE  
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"RULED OUT"   INDICATES THAT A DIAGNOSIS ONCE CONSIDERED LIKELY IS NO LONGER POSSIBLE  
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CHARACTER   AN AXIS OF CLASSIFICATION THAT SPECIFIES INFORMATION ABOUT THE PROCEDURE PERFORMED  
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VALUE   ONE OF THE 34 LETTERS OR NUMBERS THAT CAN BE SELECTED TO REPRESENT ONE OF THE CHARACTERS IN AN ICD-10-PCS CODE  
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APPROACH   THE FIFTH CHARACTER IN THE CODE IN THE MEDICAL AND SURGICAL SECTION; IT CARRIES ADDITIONAL INFORMATION FOR THAT PARTICULAR PROCEDURE  
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ROOT OPERATION   THE THIRD CHARACTER IN THE CODE IN THE MEDICAL AND SURGICAL SECTION CORRESPONDING TO THE OBJECTIVE OFF THE PROCEDURE; IN THIS SECTION ALONE THERE ARE 31 POSSIBLE OBJECTIVES  
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PRINCIPAL PROCEDURE   PRODEDURE PERFORMED FOR DEFINITIVE TREATMENT (RATHER THAN FOR DIAGNOSTIC OR EXPLORATORY PURPOSES)  
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ROOT OPERATION   THE THIRD CHARACTER IN AN ICD-10-PCS CODE, WHICH REFERS TO THE OBJECTIVE OF THE PROCEDURE  
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AFTERCARE MANAGEMENT   CONTINUED CARE DURING THE HEALING PHASE OR LONG-TERM CARE DUE TO THE CONSEQUENCES OF A DISEASE  
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EXTERNAL CAUSE OF MORBIDITY CODES   CODES FOR EXTERNAL CAUSES TO PROVIDE INFORMATION FOR INJURY RESEARCH AND EVALUATION OF INJURY PREVENTION STRATEGIES  
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PALLIATIVE CARE   CARE FOCUSED ON THE MANAGEMENT OF PAIN AND OTHER SYMPTOMS OF PATIENTS WHO ARE IN THE TERMINAL PHASE OF AN ILLNESS  
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Z CODES   CODES FOR FACTORS INFLUENCING HEALTH STATUS AND CONTACT WITH HEALTH SERVICES  
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SIGN   OBJECTIVE EVIDENCE OF DISEASE OBSERVED BY THE EXAMINING PHYSICIAN  
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SYMPTOM   SUBJECTIVE OBSERVATION REPORTED BY THE PATIENT  
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BACTEREMIA   PRESENCE OF BACTERIAL IN THE BLOOD-STREAM AFTER A TRAUMA OR AN INFECTION  
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SEPSIS   SIRS DUE TO INFECTION; A SEVERE CASE INDICATES ORGAN DYSFUNCTION  
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SEPTIC SHOCK   CIRCULATORY FAILURE ASSOCIATED WITH SEVERE SEPSIS  
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SEPTICEMIA   A SYSTEMIC DISEASE ASSOCIATED WITH PATHOLOGICAL MICROOORGANISMS OR TOXINS IN THE BLOODSTREAM  
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SIRS   SYSTEMIC INFLAMMATORY RESPONSE SYNDROME; A SYSTEMIC RESPONSE TO INFECTION OR TRAUMA WITH SUCH SYMPTOMS AS FEVER AND TACHYCARDIA  
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DIABETES MELLITUS   A CHRONIC DISORDER OF IMPAIRED CARBOHYDRATE, PROTEIN, AND FAT METABOLISM  
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TYPE 1 DIABETES   ALSO KNOWN AS JUVENILE TYPE; CHARACTERIZED BY THE BODY'S FAILURE TO PRODUCE INSULIN  
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TYPE 2 DIABETES   CHARACTERIZED BY THE BODY'S PRODUCTION OF INSULIN IN AN INSUFFICIENT QUANTITY OR THE BODY'S INABILITY TO UTILIZE SUCH INSULIN  
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ABUSE   PROBLEMATIC USE OF DRUGS OR ALCOHOL BUT WITHOUT DEPENDENCE  
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DEPENDENCE   INCREASED TOLERANCE TO DRUGS OR ALCOHOL WITH A COMPULSION TO CONTINUE TAKING THE SUBSTANCE DESPITE THE COST; WITHDRAWAL SYMPTOMS OFTEN OCCUR UPON CESSATION  
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ANEMIA   A CONDITON IN WHICH BLOOD IS DEFICIENT IN THE AMOUNT OF HEMOGLOBIN IN RED BLOOD CELLS OR IN THE VOLUME OF RED BLOOD CELLS  
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APLASTIC ANEMIA   A CONDITION IN WHICH THERE IS A DEFICIENCY OF RED BLOOD CELLS BECAUSE THE BONE MARROW IS FAILING TO PRODUCE THEM  
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PANCYTOPENIA   A TYPE OF APLASTIC ANEMIA IN WHICH RED BLOOD CELLS, WHITE BLOOD CELLS, AND PLATELETS ARE ALL DEFICIENT  
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SICKLE-CELL ANEMIA   A HEREDITARY DISEASE OF THE RED BLOOD CELLS PASSED TO A CHILD WHEN BOTH PARENTS CARRY THE GENETIC TRAIT  
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SICKLE-CELL TRAIT   A CONDITION THAT OCCURS WHEN A CHILD RECEIVES THE TRAIT FROM ONLY ONE PARENT  
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THROMBOCYTOPENIA   A DEFICIENCY IN PLATELETS, THE CELLS THAT ARE IMPORTANT IN BLOOD CLOTTING  
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CENTRAL NERVOUS SYSTEM   THE BRAIN AND SPINAL CHORD  
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CONDUCTIVE HEARING LOSS   HEARING LOSS DUE TO A PROBLEM WITH A PART OF THE EAR  
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PERIPHERAL NERVOUS SYSTEM   ALL ELEMENTS OF THE NERVOUS SYSTEM EXCEPT THE BRAIN AND SPINAL CORD  
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SENSORINEURAL HEARING LOSS   HEARING LOSS DUE TO A PROBLEM WITH THE SENSORY PART OF THE EAR OF THE NERVES ASSOCIATED WITH HEARING  
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ACUTE PULMONARY EDEMA   EXCESSIVE FLUID IN THE TISSUE AND ALVEOLAR SPACES OF THE LUNG  
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ATELECTASIS   A COLLAPSE OF LUNG TISSUE; AN INTEGRAL PART OF PULMONARY DISEASE  
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BRONCHOSPASM   A SUDDEN CONSTRICTION OF THE MUSCLES IN THE WALLS OF THE BRONCHIOLES  
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COPD   CHRONIC OBSTRUCTIVE PULMONARY DISEASE; A GENERAL TERM DESCRIBING CONDITIONS THAT RESULT IN AN AIRWAY OBSTRUCTION  
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PLEURAL EFFUSION   ACCUMULATION OF FLUID WITHIN THE PLEURAL SPACES  
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CENTRAL NERVOUS SYSTEM   THE BRAIN AND SPINAL CHORD  
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CONDUCTIVE HEARING LOSS   HEARING LOSS DUE TO A PROBLEM WITH A PART OF THE EAR  
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PERIPHERAL NERVOUS SYSTEM   ALL ELEMENTS OF THE NERVOUS SYSTEM EXCEPT THE BRAIN AND SPINAL CORD  
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SENSORINEURAL HEARING LOSS   HEARING LOSS DUE TO A PROBLEM WITH THE SENSORY PART OF THE EAR OF THE NERVES ASSOCIATED WITH HEARING  
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ACUTE PULMONARY EDEMA   EXCESSIVE FLUID IN THE TISSUE AND ALVEOLAR SPACES OF THE LUNG  
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ATELECTASIS   A COLLAPSE OF LUNG TISSUE; AN INTEGRAL PART OF PULMONARY DISEASE  
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BRONCHOSPASM   A SUDDEN CONSTRICTION OF THE MUSCLES IN THE WALLS OF THE BRONCHIOLES  
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COPD   CHRONIC OBSTRUCTIVE PULMONARY DISEASE; A GENERAL TERM DESCRIBING CONDITIONS THAT RESULT IN AN AIRWAY OBSTRUCTION  
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PLEURAL EFFUSION   ACCUMULATION OF FLUID WITHIN THE PLEURAL SPACES  
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BILLIARY SYSTEM   A NETWORK INCLUDING THE GALLBLADDER AND BILE DUCTS  
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CALCULUS   A STONE COMPOSED OF MINERALS THAT FORMS IN AN ORGAN OR DUCT OF THE BODY  
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DIVERTICULITIS   THE INFLAMMATION OF EXISTING DIVERTICULA  
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DIVERTICULOSIS   THE PRESENCE OF ONE OR MORE DIVERTICULA OF THE DESIGNATED SITE  
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DIVERTICULUM   A SMALL POUCH OR SAC OPENING FROM A TUBULAR OR SACCULAR ORGAN; CONSIDERED A MEDICAL CONDITION; THE PLURAL TERM IS DIVERTICULA  
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ESOPHAGITIS   AN INFLAMMATION OF THE LINING OF THE ESOPHAGUS  
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ESOPHAGEAL VARICES   ABNORMALLY ENLARGED VEINS IN THE LOWER PART OF THE ESOPHAGUS  
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GI   GASTROINTESTINAL; OF THE STOMACH AND/OR INTESTINES  
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ACUTE KIDNEY FAILURE   SUDDEN FAILURE OF RENAL FUNCTION FOLLOWING A SEVERE INSULT TO THE KIDNEYS  
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CHRONIC KIDNEY DISEASE   LONG-TERM INDICATING THAT RENAL DISEASE IS PRESENT  
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URETER   CARRIES URINE FROM THE KIDNEYS TO THE BLADDER  
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URETHRA   CARRIES URINE FROM THE BLADDER TO THE OUTSIDE OF THE BODY  
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NEPHROPATHY   GENERAL TERM INDICATING THAT RENAL DISEASE IS PRESENT  
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CELULITIS   AN INFECTION OF THE SKIN AND SOFT TISSUES RESULTING FROM SOME SORT OF BREAK IN THE SKIN  
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DEBRIDEMENT   REMOVAL OF DEAD, DAMAGED, OR INFECTED TISSUE  
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ANTEPARTUM   THE PERIOD OF PREGNANCY FROM CONCEPTION TO CHILDBIRTH  
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PERIPARTUM   THE PERIOD INVOLVING THE LAST MONTH OF PREGNANCY TO FIVE MONTHS POSTPARTUM  
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POSTPARTUM   THE PERIOD BEGINNING RIGHT AFTER DELIVERY AND INCLUDING THE NEXT SIX WEEKS  
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PUERPERIUM   THE CLINICAL TERM FOR THE POSTPARTUM PERIOD  
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ABORTION   THE EXPULSION OR EXTRACTION OF ALL OR PART OF THE PLACENTA WITH OR WITHOUT AN IDENTIFIABLE FETUS WITH LESS THAN AN ESTIMATED 20 WEEKS GESTATIONAL AGE  
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BIOCHEMICAL PREGNANCY   A PREGNANCY THAT IS TOO EARLY TO CONFIRM EXCEPT THROUGH BIOCHEMICAL MEANS; CONSIDERED THE EARLIEST FORM OF MISCARRIAGE  
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ECTOPIC PREGNANCY   A PREGNANCY IN WHICH A FERTILIZED OVUM IMPLANTS AND DEVELOPS OUTSIDE THE UTERUS  
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MOLAR PREGNANCY   A CONDITION IN WHICH AN OVUM WITHIN THE UTERUS DEVELOPS INTO A MOLE OR BENIGN TUOR  
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CONGENITAL ANOMALY   ABNORMAL CONDITION PRESENT AT BIRTH, WHICH MAY NOT BE RECOGNIZED UNTIL LATER IN LIFE  
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NEWBORN IMMATURITY   IMPLIES A BIRTH OF LESS THAN 37 WEEKS GESTATION  
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NEWBORN POSTMATURITY   A GESTATIONAL PERIOD OF MORE THAN 40 WEEKS  
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NEWBORN LOW BIRTH WEIGHT   IMPLIES A BIRTH WEIGHT OF 1000-2499 GRAMS  
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NEWBORN EXTREMELY LOW BIRTH WEIGHT   IMPLIES A BIRTH WEIGHT OF LESS THAN 500-999 GRAMS  
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DIASTOLIC HEART FAILURE   OCCURS WHEN THE HEART HAS A PROBLEM RELAXING BETWEEN CONTRACTIONS TO ALLOW ENOUGH BLOOD INTO THE VENTRICLES  
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SYSTOLIC HEART FAILURE   OCCURS WHEN THE ABILITY OF THE HEART TO CONTRACT DECREASES  
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THROMBOPHLEBITIS OF A VEIN   A CONDITION INDICATED BY A CLOT THAT HAS BECOME INFLAMED  
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THROMBOSIS OF A VEIN   A CONDITION INDICATED BY THE FORMING OF A CLOT  
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DIRECT EXTENSION   THE INVASION OF ADJACENT SITES BY A MALIGNANT NEOPLASM  
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INVASIVE   THE EXTENSION OF TUMOR CELLS TO OTHER ADJACENT SITES  
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METASTASIS   THE RESULTING SPREAD OF INVASIVE TUMOR CELLS  
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NEOPLASM   A NEW OR ABNORMAL GROWTH  
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EXTERNAL CAUSE CODES   INDICATE EXTERNAL CAUSE OF MORBIDITY; USED WITH INJURY AND POISONING CODES  
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PATHOLOGICAL FRACTURE   A FRACTURE CAUSED BY BONE WEAKENING ASSOCIATED WITH CONDITIONS SUCH AS OSTEOPOROSIS OR NEOPLASTIC DISEASES  
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RULE OF NINES   A TOOL TO HELP PHYSICIANS ESTIMATE THE AMOUNT OF BODY SURFACE INVOLVED IN A BURN  
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ADVERSE EFFECT   CLASSIFICATION OF A CONDITION CAUSED BY A DRUG OR ANOTHER SUBSTANCE WHEN USED CORRECTLY  
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POISONING   CLASSIFICATION OF A CONDITION CAUSED BY A DRUG OR ANOTHER SUBSTANCE WHEN USED INCORRECTLY  
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TOXIC EFFECT   CLASSIFICATION OF A CONDITION CAUSED BY INGESTION OR CONTACT WITH A HARMFUL SUBSTANCE  
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UNDERDOSING   CLASSIFICATION OF A CONDITION CAUSED BY TAKING LESS OF A MEDICATION THAN IS PRESCCRIBED BY A PROVIDER OR A MANUFACTURER'S INSTRUCTIONS  
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LATROGENIC CONDITION   CONDITION RESULTING FROM THE TREATMENT OF ANOTHER CONDITION  
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TABULAR LIST   CONTAINS CATEGORIES, SUBCATEGORIES, AND VALID CODES  
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