AHA Coding Clinic® for ICD-9 - 2011 Quarter 4; VOLUMES 1 & 2 NEW/REVISED CODES
Pilar Cyst and Trichilemmal Cyst
A 49-year-old woman was admitted to the hospital because of bleeding from her right upper eyelid. The bleeding was secondary to a lobulated lesion of the eyelid. She underwent full-thickness excision of the mass along with reconstruction using a skin graft. The mass involved more than 1/3 of the eyelid. The surgeon documented the postoperative diagnosis as proliferating trichilemmal cyst. How should this case be coded? ...
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Article Overview
This article covers the addition of new diagnosis coding for pilar and trichilemmal cysts effective October 1, 2011, along with the surrounding terminology used for related skin and hair-follicle conditions. It is intended for coders and revenue cycle professionals who need to understand how these diagnoses fit into the broader code structure and how the topic is addressed in a coding scenario.
Why This Topic Matters
The article helps coders recognize newer diagnosis terminology and understand where related cyst conditions are classified so records can be interpreted consistently.
Article Sections
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Diagnosis code updates and condition overview
Introduces the new diagnosis coding for pilar and trichilemmal cysts and describes the general clinical context of these conditions. It also places the topic within the broader classification of hair follicle and sebaceous gland disorders.
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Coding classification and example scenario
Summarizes the placement of the related diagnosis categories in the code set and includes a coding example involving a documented postoperative diagnosis and associated procedure coding context.
What You Will Learn
- How the article frames the updated diagnosis terminology for pilar and trichilemmal cysts
- How the conditions are positioned within broader hair follicle and sebaceous gland classification
- What kind of coding scenario is used to illustrate the topic
- Which general code sets are involved in the article
Who Should Read This
- Medical coders
- Coding auditors
- Revenue cycle staff
- Clinical documentation specialists
Codes Discussed
Code Ranges Discussed
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