Table 1. Example of Diagnoses in JHU Models' ADG and HOSDOM Variables.

Variable		Example ICD-9-CM Diagnoses
Hospital Dominant (HOSDOM) marker	384.9	Other Septicemia Due to Gram-Negative Organisms
	157.1	Malignant Neoplasm of Body of Pancreas
	276.5	Volume Depletion Disorder
	410.01	Acute Myocardial Infarction, Anterolateral Wall, Initial Episode Care
	540.0	Acute Appendicitis With Generalized Peritonitis
Ambulatory Diagnostic Groups
3 Time Limited: Major	361.0	Retinal Detachment With Retinal Defect
4 Time Limited: Major-Primary Infections	466.1	Acute Bronchiolitis
6 Asthma	493.0	Extrinsic Asthma
7 Likely to Recure: Discrete	531.9	Gastric Ulcer, Unspecified as Acute or Chronic
9 Likely to Recur: Progressive	250.10	Adult-Onset Type Diabetes Mellitus With Ketoacidosis
11 Chronic Medical: Unstable	424.1	Aortic Valve Disorders
16 Chronic Specialty: Unstable, Orthopedic	723.0	Spinal Stenosis in Cervical Region
22 Injuries/Adverse Effects: Major	820.8	Fracture of Unspecified Part of Neck of Femur, Closed
23 Psychosocial: Time Limited, Not Severe	309.01	Adjustment Reaction With Brief Depressive Reaction
25 Psychosocial: Recurrent or Persistent, Unstable	290.0	Senile Dementia, Uncomplicated
27 Signs/Symptoms: Uncertain	458.0	Orthostatic Hypertension
28 Signs/Symptoms: Major	429.3	Cardiomegaly
32 Malignancy	174.9	Malignant Neoplasm of Breast (Female)

NOTE: ADG is ambulatory diagnosis group morbidity classification method of the Ambulatory Care Group case-mix system. HOSDOM is diagnosis (843 total) that is usually (50 percent or more) treated in the inpatient setting.

SOURCE: Analyses on 1991-92 project data by authors during 1994-95.