Postnasal Drip

Effective October 1, 2006, code 784.9, Other symptoms involving head and neck has been expanded to create unique codes for postnasal drip (784.91) and other symptoms involving head and neck (784.99). Postnasal drip is excess fluid or mucus production running down the back of the throat. It can be caused by a number of different conditions including colds, flu, sinusitis, and other inflammatory disorders. Signs and symptoms include swelling, and irritation of the sinus lining, leading to bleeding or polyps. Post nasal drip can cause sore throat, or cause a cough that is usually worse at...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article is for coding professionals and clinical staff who need to understand a symptom classification update affecting head-and-neck complaints. It provides background on postnasal drip, notes the effective date of the change, and outlines how the affected symptom category was reorganized within ICD-9-CM.

Why This Topic Matters

Updates to symptom coding can affect documentation review, claim processing, and consistency in reporting common upper-respiratory complaints. Understanding the scope of the change helps users locate the right category in the revised code structure.

Article Sections

  1. Overview and Clinical Background

    Introduces postnasal drip and describes it in general clinical terms. Also summarizes common associated symptoms and broad causes.

  2. ICD-9-CM Code Update

    Describes a revision to a head-and-neck symptom category effective October 1, 2006. Notes the related organization of the affected symptom group within the code set.

  3. Affected Symptoms Listing

    Presents the symptom group referenced in the update, including the items addressed by the revised category structure. This section is focused on the scope of the symptom list rather than detailed coding guidance.

What You Will Learn

  • The general clinical context of postnasal drip
  • That the article discusses an ICD-9-CM symptom-category update
  • Which broad head-and-neck symptom group is affected by the change
  • The effective date associated with the update

Who Should Read This

  • Medical coders
  • Coding auditors
  • Clinical documentation staff
  • Revenue cycle professionals
  • Practice managers

Codes Discussed

  • ICD-9-CM: 784.9
  • ICD-9-CM: 784.91
  • ICD-9-CM: 784.99

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