ICD-10 Diagnosis Code T65.821S

Toxic effect of harmful algae and algae toxins, acc, sqla

Diagnosis Code T65.821S

ICD-10: T65.821S
Short Description: Toxic effect of harmful algae and algae toxins, acc, sqla
Long Description: Toxic effect of harmful algae and algae toxins, accidental (unintentional), sequela
This is the 2018 version of the ICD-10-CM diagnosis code T65.821S

Valid for Submission
The code T65.821S is valid for submission for HIPAA-covered transactions.

Code Classification
  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
      • Toxic effect of other and unspecified substances (T65)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code T65.821S is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)

  • 922 - OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC
  • 923 - OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC

Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Present on Admission (POA) Additional informationCallout TooltipPresent on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

The code T65.821S is exempt from POA reporting.

Synonyms
  • Algae poisoning
  • Azaspiracid poisoning
  • Microcystis flos-aquae poisoning
  • Microcystis species poisoning

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