This standard BS ISO 13779-6:2015 Implants for surgery. Hydroxyapatite is classified in these ICS categories:
11.040.40 Implants for surgery, prosthetics and orthotics
This part of ISO 13779 specifies requirements for hydroxyapatite powders used as a raw material for the manufacturing of surgical implants or coating of surgical implants.
This part of ISO 13779 does not apply to hydroxyapatite coatings, ceramic hydroxyapatite, glass ceramics, α- and β-tricalcium phosphate, or other forms of calcium phosphate.