Home > Medical Terms for Billing and Coding > J-CODES j-codes A subset of the HCPCS Level II code set with a high-order value of J that has been used to identify certain drugs and other items. Learn more about medical coding and billing, training, jobs and certification.
Growth and Yield-White pine is a long-lived tree commonly reaching 200 years if undisturbed; maximum age may exceed 450 years. It has a remarkable rate of growth compared to other pine and hardwood species within its range (20).eight growth of both planted and natural white pine is slow during the first 2 to 3 years. Afterwards, growth accelerates rapidly, peaking at an average annual rate of 1 m (3 ft) between 10 and 15 years on site index 80 (base 50 years) (6).
Black spruce can grow to reach heights up to 20 m and are thought to live as long as 280 years, though few are thought to reach this age, owing to the prevalence of forest fires and logging in the boreal forest. The dominant feature in the life cycle of the black spruce, and all other coniferous trees, is the cone. A cone, which may also be called a strobilus, consists of a central axis which is surrounded by tightly packed, thick scales.