Chinese officials have repeatedly said they want those sanctions, imposed in 2018, dropped to facilitate discussions.
This scuppered planned talks between theatre-level commands, regular defence policy co-ordination and military maritime consultations, which included operational safety issues.
Diplomats and Chinese analysts say military attaches at embassies Beijing and Washington are still able to meet officials - an important element of routine communication.
Senior Chinese military intelligence officials also participated in a secret meeting of regional spies in Singapore earlier this month - a session that included U.S. Director of National Intelligence Avril Haines.
The official said some lower-level interactions with the Chinese military had continued.
Persons:
Antony Blinken, Lloyd Austin, Li Shangfu, Li, Nancy Pelosi's, National Intelligence Avril Haines, Austin, Zhou Bo, Yang Tao, Admiral John Aquilino, General Lin Xiangyang, Greg Torode, Tian, Idrees Ali, Phil Stewart, Gerry Doyle
Organizations:
. Defence, China's Defence, Taiwan, Pentagon, Diplomats, National Intelligence, PLA, Beijing's Tsinghua University . Senior, Reuters, U.S, Pacific Command, Eastern Theatre, Thomson
Locations:
HONG KONG, East Asia, China, United States, Beijing, Singapore, U.S, Taiwan, Washington, Hong Kong