AWS has released AWS Billing Transfer for centrally managing AWS billing and costs across multiple organisations. How this is handled in CloudHealth.
AWS Billing Transfer is supported in CloudHealth.
Please follow steps under "Sending a Billing Transfer invitation in the AWS Console" section in this documentation link: https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/cloudhealth/saas/index/working-with-partner-platform-of-tanzu-cloudhealth-working-with-partner-platform/working-with-partner-platform-of-tanzu-cloudhealth-aws-managed-service-providers.html