HealthStats NSW
HealthStats NSW
HealthStats NSW

Hospitalisations by category of cause

Females, Other
26 (24.5, 27.6)Females, Other factors infl. health
4035.8 (4016.5, 4055.3)Females, Dialysis
3057.2 (3041.4, 3073.1)Females, Injury & poisoning
1963.1 (1950, 1976.3)Females, Symptoms & abnormal findings
2938.5 (2922.2, 2954.8)Females, Maternal, neon. & congenital
4488.5 (4467.4, 4509.7)Females, Genitourinary diseases
2147.3 (2133.1, 2161.6)Females, Musculoskeletal diseases
1681.3 (1669.4, 1693.4)Females, Skin diseases
518.6 (511.8, 525.5)Females, Digestive system diseases
3442.3 (3424.5, 3460.1)Females, Respiratory diseases
1574 (1562.1, 1586)Females, Circulatory diseases
1285.2 (1275.2, 1295.3)Females, Nervous & sense disorders
2535.2 (2520.7, 2549.8)Females, Mental disorders
2114 (2099.7, 2128.3)Females, Endocrine diseases
727 (718.8, 735.3)Females, Blood & immune diseases
520.5 (513.8, 527.3)Females, Other neoplasms
824 (815.5, 832.6)Females, Malignant neoplasms
1036.8 (1027.6, 1046.1)Females, Infectious diseases
615.8 (608.3, 623.3)Males, Other
49.8 (47.6, 52.1)Males, Other factors infl. health
3373.1 (3355.6, 3390.7)Males, Dialysis
5648.7 (5626.5, 5671.1)Males, Injury & poisoning
2607 (2591.3, 2622.8)Males, Symptoms & abnormal findings
2747.8 (2732, 2763.7)Males, Maternal, neon. & congenital
722.8 (714.4, 731.4)Males, Genitourinary diseases
1390.8 (1379.6, 1402)Males, Musculoskeletal diseases
1780.2 (1767.5, 1793.1)Males, Skin diseases
632.7 (624.9, 640.4)Males, Digestive system diseases
3648.3 (3629.9, 3666.9)Males, Respiratory diseases
1791.9 (1779, 1804.8)Males, Circulatory diseases
2096.4 (2082.9, 2109.9)Males, Nervous & sense disorders
2481.6 (2466.8, 2496.5)Males, Mental disorders
1706.1 (1693.2, 1719)Males, Endocrine diseases
487.5 (480.9, 494.3)Males, Blood & immune diseases
399.7 (393.8, 405.7)Males, Other neoplasms
744.1 (736.1, 752.3)Males, Malignant neoplasms
1482.5 (1471.3, 1493.8)Males, Infectious diseases
602.2 (594.8, 609.7)
  • + 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.

    Patients treated solely within the emergency department are excluded from this indicator report due to a policy change (PD2017_015). 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. The drop in hospitalisations for Endocrine diseases in 2010-11 is related to a change in coding standards for diabetes as a principal diagnosis; Further details can be found in the Methods tab in the following HealthStats NSW indicator:

    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 of this 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 for NSW residents only. Records involving rehabilitation are excluded.

      Episodes that are entirely within an emergency department are excluded.

      This indicator uses principal diagnosis only.

      Circulatory diseases I00-I99, excludes I84
      Dialysis Z49.1, Z49.2
      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, Z49.0, 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 2009-10 and 2018-19, the number of hospitalisations has increased in NSW by 31% (from 2,337,027 in 2009-10 to 3,063,914 in 2018-19) but the age-standardised hospital rate has increased by only 11% (from 31,240 per 100,000 population in 2008-09 to 34,818 per 100,000 population in 2018-19). 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 3.3% higher than males in 2018-19. 

      • 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, as well as 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, 26 February 2020