Lucy was standing on a chair in her apartment kitchen and changing a light bulb when she slipped and fell. She struck the glass stovetop, which shattered. She presents to the ER w/a simple laceration to her left forearm that has embedded glass particles. {Ans: d) Correct ICD-10-CM code(s): S51.822A, W07.XXXA, W25.XXXA, Y93.E9, Y92.030 (The principal diagnosis should be for the laceration to her left forearm.) In the ICD-10-CM Index, look up Laceration, forearm, left, w/foreign body, which is code S51.822. A 7th digit is needed, which is (A), for initial encounter. In the External Causes Index, look up Fall, falling (accidental) from chair, which is code W07. Again, a 7th digit is needed, which is (A). To find additional codes, look up Contact w/glass (broken), which indicates W25. Again, a 7th digit is needed, which is (A). According to ICD-10-CM guideline I.C.20.c, "an activity code should be used in conjunction w/a place of occurrence code, Y92," so the correct answer requires activity and place of occurrence codes. Activity codes are Y93 codes. Under Y93 in the ICD-10-CM manual, there is a list we can scan to find that Y93.E codes are for Activities involving personal hygiene and interior