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  6. 2024 ICD-10-CM Code G45.4

2024 ICD-10-CM Diagnosis Code G45.4

Transient global amnesia

ICD-10-CM Code:
G45.4
ICD-10 Code for:
Transient global amnesia
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Diseases of the nervous system
    (G00–G99)
    • Episodic and paroxysmal disorders
      (G40-G47)
      • Transient cerebral ischemic attacks and related syndromes
        (G45)

G45.4 is a billable diagnosis code used to specify a medical diagnosis of transient global amnesia. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Anterograde amnesia
  • Retrograde amnesia
  • Temporary loss of memory
  • Transient global amnesia

Clinical Classification

Clinical Information

  • Retrograde Amnesia

    the loss of access to memories that were previously encoded; this disorder is most commonly preceded by trauma, including physical brain injury, stroke, or seizure, but may also be psychogenic in origin. memory loss may be temporary or permanent, but the ability to encode new memories or skills is not generally affected.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert G45.4 to ICD-9-CM

  • ICD-9-CM Code: 437.7 - Transient global amnesia

Patient Education


Memory

Every day, you have different experiences and you learn new things. Your brain cannot store all of that information, so it has to decide what is worth remembering. Memory is the process of storing and then remembering this information. There are different types of memory. Short-term memory stores information for a few seconds or minutes. Long-term memory stores it for a longer period of time.

Memory doesn't always work perfectly. As you grow older, it may take longer to remember things.

It's normal to forget things once in a while. We've all forgotten a name, where we put our keys, or if we locked the front door. If you are an older adult who forget things more often than others your age, you may have mild cognitive impairment. Forgetting how to use your phone or find your way home may be signs of a more serious problem, such as:

  • Alzheimer's disease
  • Other types of dementia
  • Stroke
  • Depression
  • Head injuries
  • Blood clots or tumors in the brain
  • Kidney, liver, or thyroid problems
  • Reactions to certain medicines

If you're worried about your forgetfulness, see your health care provider.

NIH: National Institute on Aging


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.