The Abhidharma teachings are studied by Gelugpas using primarily the text Abidharmakosha by Acariya Vasubandhu. It is one of the five major areas of study for those who wish to become Geshes, and therefore is studied in the Sera, Ganden and Drepung nunneries. With the introduction of the Geshe ma degree for women it is now also being studied at several of the important Gelug monasteries.
•Abhidharma (mngon-par chos, mdzod), special topics of knowledge, covers the physical and mental constituents of limited beings, rebirth states, karma, disturbing emotions and attitudes, paths to liberation, and so on. It is based on A Treasure House of Special Topics of Knowledge (Chos mngon-pa'i mdzod, Skt. Abhidharmakosha) by Vasubandhu (dByigs-gnyen) and is from the Vaibhashika viewpoint.http://www.berzinarchives.com/web/en/ar ... ation.html
It is also taught in the West as part of the FPMT's Master's Program:
Main text: Treasury of Manifest Knowledge by Vasubandhu
Treasury of Manifest Knowledge(Abhidharmakosha) by Vasubandhu sets out a detailed presentation of the constituents, faculties, Buddhist cosmology, the six realms, karma, the afflictions and their antidotes, the various types of spiritual practitioners and their paths, and the knowledges, concentrations, and absorptions.
This subject is explained on the basis of the First Dalai Lama’s Clarifying the Path to Liberation: An Explanation of the ‘Treasury of Manifest Knowledge’.
FPMT Master's Program Website
Many of the Abhidharmakosha's teachings are incorporated into the Lam Rim, especially the sections about Karma- cause and effect, the six realms and so forth. Because the text by Vasubhandu is from the Vaibhasika viewpoint, however, the emptiness section of the Lam Rim relies more on other works as its support. Just looking in the index of the first volume of the Lam Rim Chenmo by Lama Tzonkhapa (Snow Lion Edition), the Abdhidharma Kosha is mentioned or quoted from 16 times, its autocommentary, also by Vasubhandu, is mentioned or quoted 12 times.