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Chronic lung disease

Current definition

March 2022

Chronic lung disease – of specified severity

Confirmation by a consultant physician of chronic lung disease resulting in all of the following:

  • the need for continuous daily oxygen therapy on a permanent basis
  • FEV1 being less than 50% of normal, and
  • Vital Capacity less than 50% of normal.
ViewHide summary for this year

We've updated the FEV1 from being less than 40% to less than 50% of normal.

 

Previous definitions

November 2015

Chronic lung disease – of specified severity

Confirmation by a consultant physician of chronic lung disease resulting in all of the following:

  • the need for continuous daily oxygen therapy on a permanent basis
  • FEV1 being less than 40% of normal, and
  • Vital Capacity less than 50% of normal.