As a side note here, modern TCM is not the only method of Chinese/Oriental Medicine. Since most accredited schools and colleges of Oriental Medicine now either primarily teach or only teach TCM, the vast majority of professional, licensed acupuncturists encountered nowadays usually specialize in the practice of modern TCM. However, a number of older methods or systems of Classical Chinese Medicine also continue to be practiced by some, and a small number of schools still offer formal training in these methods.
Notably, these mehods include the Wu-Hsing Fa (Five Element Phases Method), the Tzu-Wu Liu Chu Liao Fa (Astrological Method), and the Ling Kuei Pa Fa (Mathematical Horary Points Method) as outlined in the essential classical medical texts generally thought to have originated in the latter part of the first millennium B.C., namely the Su Wen, Ling Shu and Nan Ching. Altough there are exceptions, most practitioners of the older classical methods and systems are people who were formally trained in Chinese Medicine by way of a long-term apprenticeship with an established practitioner and/or at traditional medicine schools in the Orient prior to the widespread establishment of TCM schools in China and in Western nations.
As such, the standardized Disease Syndrome method of modern TCM developed in the PRC during the past 60 years or so is definitely not the only method of employing acupuncture and Chinese medicinal herb formulas.