In an effort to push specificity to the limit, some ICD-10 codes have gotten silly. Codes exist for being hurt at the opera (Y92253), walking into a lamppost (Y92253), walking into a second lamppost (W2202XD), getting sucked into a jet engine (V97.33XD), and being burned due to water skis on fire (V91.07XD).

But this is not the Achilles heel of the ICD-10.

First, medical practices and hospitals must know and have all of these 68 thousand codes readily available to add to the medical record in order to bill correctly and hope to be paid.

via Articles: The October Surprise that Could Cripple the Practice of Medicine.