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A colleague who is working on the ICD-11 mapping project came across the concept 70388009 |Postoperative cataract syndrome (disorder)|. This is not a term listed in either ICD-11 or ICD-10.

A Google Scholar search for the term returned just a single reference which is from an Royal College of Ophthalmologists audit from 2020. The term is mentioned once, where it is included in a list of diagnoses, but is not expanded on in any meaningful way. 

Theyalso searched using the synonyms, and both 'vitreous tug syndrome’

and 'Irvine-Gass syndrome' (IGS) return more results, including a few

papers suggesting that another term for these conditions is 'pseudophakic cystoid macular edema (PCME)'. This exact term does not appear in either SNOMED CT or ICD-11; however, it would probably be synonymous with 1217634001 |Cystoid macular edema following cataract surgery (disorder)|, which has an equivalent ICD-11 foundation entity here - http://id.who.int/icd/entity/1314096397. 

There are also terms for posterior capsular opacification in SNOMED which seem to be referenced as postoperative complications:

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Would you be able to advise if 70388009 |Postoperative cataract syndrome (disorder)| is still a valid concept and distinct from other existing concepts mentioned above or is it a duplicate of one of these?

Many thanks
Elaine