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cystoidea

Wikipedia Summary

Cystoidea was defined as a class of extinct paleozoic blastozoan echinoderms established to encompass stalked taxa that were neither crinoids nor blastoids. It was shown to be polyphyletic in the late 1960s but continues to be used even in recent (as of 2022) literature to discuss both rhombiferans and diploporitans. .
Related Codes (1)
Code
Description
Billable
Details
H35.35Cystoid macular degeneration
Type 1 Excludes (1)

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