2024 ICD-10-CM Diagnosis Code G92.9
Unspecified toxic encephalopathy
- ICD-10-CM Code:
- G92.9
- ICD-10 Code for:
- Unspecified toxic encephalopathy
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Chronic
- Code Navigator:
G92.9 is a billable diagnosis code used to specify a medical diagnosis of unspecified toxic encephalopathy. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.
Unspecified diagnosis codes like G92.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Ammonia encephalopathy
- Arsenic encephalopathy
- Carbon monoxide encephalopathy
- Drug-induced encephalopathy
- Encephalopathy caused by heavy metal
- Encephalopathy caused by heavy metal
- Encephalopathy caused by heavy metal
- Inflammation of spinal cord due to toxin
- Lead and/or lead compound poisoning
- Organic mercury poisoning
- Organophosphate encephalopathy
- Toxic encephalopathy
- Toxic encephalopathy caused by monomethyl mercury
- Toxic encephalopathy due to carbon tetrachloride
- Toxic encephalopathy due to hydroxyquinoline
- Toxic encephalopathy due to lead
- Toxic encephalopathy due to mercury
Clinical Classification
Clinical Category | CCSR Category Code | Inpatient Default CCSR | Outpatient Default CCSR |
---|---|---|---|
Drug induced or toxic related condition | INJ030 | N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis. | N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis. |
Other nervous system disorders (neither hereditary nor degenerative) | NVS020 | Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis. | Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis. |
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.
Code First
Code FirstCertain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
Use Additional Code
Use Additional CodeThe “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
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).
- - Encephalopathy (acute) - G93.40
- - toxic - G92.9
- - Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute) - See Also: Encephalitis; - G04.91
- - toxic - G92.9
Replacement Code
G929 replaces the following previously assigned ICD-10-CM code(s):
- G92 - Toxic encephalopathy
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 - Code Added, effective from 10/1/2021 through 9/30/2022
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.