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Answer: A pinguecula is degenerated conjunctival tissue which may occur on either side of the cornea; it is an anatomical defect that looks like a bump on the conjunctiva. It is the early stage of pterygium. Use 372.51 (conjunctival degenerations and deposits; pinguecula) whether the pinguecula is irritated or not.
Answers to Reader Questions and You Be the Coder reviewed by Lise Roberts, vice president, Health Care Compliance Strategies, Jericho, N.Y.; and Raequell Duran, president, Practice Solutions, Santa Barbara, Calif.