Apparent Life-Threatening Event (ALTE) in Infant

As of October 1, 2010, the “excludes note” under code 799.82, which excluded coding signs and symptoms associated with a confirmed diagnosis of apparent life-threatening event in infant (ALTE) has been deleted. Code 799.82, Apparent life-threatening event in infant, should be assigned as an additional code if the event is documented in the medical record. The code may be assigned as the principal diagnosis if no other diagnosis(es) is documented. 799.8 Other ill-defined conditions 799.82 Apparent life threatening event in infant Add Code first confirmed diagnosis, if known Revise Use...

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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 covers diagnosis coding guidance for an apparent life-threatening event in an infant, including how the topic is addressed in ICD-9-CM and how documentation context affects reporting. It is aimed at coding professionals, CDI staff, and clinicians who need to understand how the documentation is interpreted within a coding workflow. The article also presents an example scenario involving newborn symptoms and an associated clinical condition, but the premium content should be consulted for the full discussion.

Why This Topic Matters

Accurate identification of the documented event and related conditions can affect diagnosis assignment, sequencing, and record consistency in newborn and infant cases.

What You Will Learn

  • How the topic of apparent life-threatening events in infants is addressed in diagnosis coding guidance.
  • How documentation context influences whether the event is reported in addition to other diagnoses.
  • How an infant case example is used to illustrate coding considerations.
  • The relationship between the article’s guidance and newborn-related diagnosis reporting.

Who Should Read This

  • Medical coders
  • Coding auditors
  • Clinical documentation integrity specialists
  • Healthcare billing staff
  • Clinicians involved in documentation

Codes Discussed


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