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READ Codes

NHS UK Read Pathology Bounded Code List (PBCL)

Important Notice - Information on the withdrawal of Read v2 and CTV3 can be found here


The Pathology Bounded Code List (PBCL) has been developed to provide a defined or bounded subset of Read codes for use in laboratory to GP messaging. Use of the PBCL ensures that there is common understanding by both sending and receiving clinicians of the laboratory investigations and results.

The PBCL continues to be supported following the final release of Read CTV3 in April 2018 but will only be updated on an ad hoc basis where there is an identified national need. Subscribers will be notified in advance of any changes.


  • Releases (3)

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