HealthStats NSW
HealthStats NSW
HealthStats NSW

Hospitalisations by category of cause

Females, Other
26.6 (25, 28.3)Females, Other factors infl. health
4140.3 (4120.5, 4160.2)Females, Dialysis
3220.8 (3204.4, 3237.4)Females, Injury & poisoning
1937 (1923.8, 1950.2)Females, Symptoms & abnormal findings
2848.4 (2832.3, 2864.6)Females, Maternal, neon. & congenital
4498.8 (4477.3, 4520.2)Females, Genitourinary diseases
2126.7 (2112.4, 2141)Females, Musculoskeletal diseases
1677.6 (1665.5, 1689.8)Females, Skin diseases
510.2 (503.3, 517.1)Females, Digestive system diseases
3459.1 (3441.1, 3477.2)Females, Respiratory diseases
1610.5 (1598.3, 1622.8)Females, Circulatory diseases
1279.1 (1269, 1289.3)Females, Nervous & sense disorders
2531.7 (2517, 2546.5)Females, Mental disorders
2016.5 (2002.5, 2030.6)Females, Endocrine diseases
700.5 (692.4, 708.7)Females, Blood & immune diseases
568.3 (561.2, 575.5)Females, Other neoplasms
821.8 (813.2, 830.5)Females, Malignant neoplasms
1044.3 (1034.9, 1053.7)Females, Infectious diseases
625.5 (617.9, 633.1)Males, Other
59.9 (57.5, 62.5)Males, Other factors infl. health
3357.5 (3339.8, 3375.3)Males, Dialysis
5608.6 (5586.1, 5631.1)Males, Injury & poisoning
2613.7 (2597.7, 2629.7)Males, Symptoms & abnormal findings
2655.3 (2639.6, 2671.1)Males, Maternal, neon. & congenital
713.1 (704.7, 721.6)Males, Genitourinary diseases
1419.5 (1408, 1431.1)Males, Musculoskeletal diseases
1794.8 (1781.9, 1807.9)Males, Skin diseases
628.5 (620.7, 636.3)Males, Digestive system diseases
3667.4 (3648.6, 3686.2)Males, Respiratory diseases
1837.2 (1824, 1850.5)Males, Circulatory diseases
2101.3 (2087.7, 2115.1)Males, Nervous & sense disorders
2519.6 (2504.4, 2534.8)Males, Mental disorders
1694.7 (1681.7, 1707.8)Males, Endocrine diseases
469.5 (462.8, 476.2)Males, Blood & immune diseases
413.3 (407.2, 419.5)Males, Other neoplasms
731.4 (723.4, 739.6)Males, Malignant neoplasms
1474.7 (1463.3, 1486.2)Males, Infectious diseases
612.9 (605.3, 620.6)
  • + Source

    NSW Combined Admitted Patient Epidemiology Data and ABS population estimates (SAPHaRI). Centre for Epidemiology and Evidence, NSW Ministry of Health.

  • + Notes

    neon.= neonatal.

    Only NSW residents are included. Rehabilitation episodes are excluded. Figures are based on where a person resides, rather than where they are treated. Hospital separations were classified using ICD-10-AM. Rates were age-adjusted using the Australian population as at 30 June 2001.

    A recent policy change (PD2017_015) resulted in patients treated solely within the emergency department being excluded from this indicator report. Please note that a minority of patients being managed in short stay areas of emergency departments are still included. Further information is found in a paper in the HealthStatsPLUS Methods tab on this website.

    ICD10-AM chapters on diseases of the nervous system, eye and ear and chapters on conditions relating to pregnancy, perinatal period and congenital diseases are combined into one category in the analysis. ICD10-AM chapter Factors influencing health has been divided into two categories: Dialysis and Other factors influencing health in the analysis. 

    Numbers for recent years include an estimate of the small number of hospitalisations of NSW residents in interstate public hospitals, data for which were unavailable at the time of production. Further details can be found in the Methods tab in the following HealthStats NSW indicator:

    LL/UL 95%CI = lower and upper limits of the 95% confidence interval for the point estimate.

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  • + Methods
  • + Codes
    • Codes: Hospitalisation by category

      The International Statistical Classification of Diseases and Related Health Problems

      National Centre for Classification in Health, Australia; AM - Australian Modification
      Description ICD-10 & ICD-10-AM Comments
      Blood and immune diseases D50-D89 All records are included except those involving rehabilitation, NSW residents only, all ages.

      Episodes that are entirely within an emergency department are excluded.

      This indicator uses principal diagnosis only.

      Circulatory diseases I00-I99, excludes I84
      Dialysis Z49
      Digestive system diseases K00-K93, includes I84 up to 2012/13 
      Endocrine diseases E00-E89
      Genitourinary diseases N00-N99
      Infectious diseases A00-B99
      Injury and poisoning S00-T98
      Maternal, neonatal and congenital causes O00-Q99
      Mental disorders F00-F99
      Musculoskeletal diseases M00-M99
      Neoplasms - malignant C00-C99
      Neoplasms - other than malignant D00-D48
      Nervous and sense disorders G00-H95
      Other factors influencing health Z00-Z48, Z50-Z99
      Respiratory diseases J00-J99
      Skin diseases L00-L99
      Symptoms and abnormal findings R00-R99, U00-U49


      Haemorrhoids were classified as diseases of the circulatory system under ICD-10-AM Seventh edition (I84). In ICD-10-AM Eighth edition haemorrhoids are classified with diseases of the digestive system (K64). Consequently, haemorrhoids are not included in the total count of diseases of circulatory system.

  • + Related Indicators
  • + Associated Information
    • Key points: Hospitalisation

      • Over the 10 years between 2008-09 and 2017-18, the number of hospitalisations has increased in NSW by 32% (from  2,259,212 in 2008-09 to 2,986,204 in 2017-18) but the age-standardised hospital rate has increased by only 13% (from 30,816 per 100,000 population in 2007-08 to 34,862 per 100,000 population in 2017-18). Age-standardisation adjusts for the  impact of the known effect of an ageing population on increasing hospitalisation rates over time.

      • Age-standardised hospitalisation rates for females are consistently higher than those for males over time and were 7% higher than males in 2017-18. 

      • Apart from population ageing and differences in the age structures of population groups (such as Aboriginal peoples and those living in rural areas), rates of hospitalisation are influenced by the incidence (new cases) and prevalence (existing cases) of chronic and acute disease and injury in the population, availability of and access to health services, and availability of treatment options for diseases and injuries.

    • Introduction: Hospitalisation


      The term 'hospitalisation' refers to a period of time during which a person stayed in a hospital for a defined purpose, which could be diagnostic, curative or palliative. A hospital stay starts with a formal process of admission and ends with a formal separation.

      Hospitalisations are described in hospital statistics, which measure hospital activity. The number of patients in a period of time, number of beds, types of beds (for acute or chronic cases etc) and bed occupancy levels are measured among other variables. These statistics are compared to staffing levels, available funds and population size and are used to monitor the distribution and utilisation of hospital services. Hospitalisations can also be analysed by a patient's demographic and clinical characteristics such as their age and their clinical diagnosis.

      Sources of data in NSW

      Sources of data on hospitalisations in NSW include the NSW Combined Admitted Patient Epidemiology Data (CAPED) and NSW Population Health Survey.

      In HealthStats NSW, hospitalisations are analysed on the basis of separations (i.e. the date the person completed that hospital episode, rather than the date that person was admitted into that hospital episode). The reason for this is that the coding of a patient's clinical diagnosis during a hospitalisation is done after separating from that hospital. This diagnosis may be different from the reason the person was admitted. Expert medical coders decide on the principal and associated diagnoses after separation based on the whole medical records of the patient.

    • Interventions: Hospitalisation

      Interventions aiming to reduce hospitalisation rates are embedded in strategies dealing with specific health issues or specific disadvantaged populations.

      These strategies focus on reduction of prevalence of conditions in the community (prevention of conditions arising in the first place) or on reduction of hospitalisations for these conditions via two different methods. One method focuses on preventing worsening of conditions and managing these conditions via primary care system and thus preventing admission to hospital. The topic of Potentially Preventable Hospitalisations (Ambulatory Care Sensitive Conditions) contains a discussion of details concerning these conditions. The NSW Chronic Care Program covers many such conditions requiring hospitalisation.

      The other approach reduces the burden of hospitalisations on the health system by reducing the number of beds required at any point in time. It is based on the concept of out-of-hospital care, which includes hospital care at home. NSW Ministry of Health delivers an increasing type and number of services in out of hospital environment.

    • For more information: Hospitalisation

      Useful websites include:

      NSW Ministry of Health. Hospitals/Health services website at

      NSW Ministry of Health. Hospital in the home. Sydney: NSW MoH, 2012. Available at:

      Bureau of Health Information at

      Australian Bureau of Statistics at

      Australian Institute of Health and Welfare at

      healthdirect at

Last Updated At: Wednesday, 17 April 2019