I think -cat/indices?v gives you the number of documents plus sub-documents (if there is any) indexed. To get the correct count I think you change the URL to the index of interest then use _count to get the correct number of documents in the index. You can take a look at the document below but don't add the "query portion"
https://www.elastic.co/guide/en/elasticsearch/reference/2.0/search-count.html