This is how my Coders's Desk Referecne describes the 2 procedures:
36000-the physician places a needle or catherter through a puncture in the skin and into a peripheral vein
36410-A needle is inserted through the skin to puncture a vein of a person 3 years of age or older. The needle is inserted into the vein and used for the withdrawal of blood for diagnotsic study or for the therapeutic infusion of intravenous medication. A soft flexible catheter may be placed for prolonged therapy. Once the procedure is complete, the needle or catherter is withdrawn and pressure is applied over the puncture site to control bleeding. Use this code for venipncture necessitating a physician's skill, not when routine venipuncture is performed.