ICD-10 Diagnosis Code T66.XXXA

Radiation sickness, unspecified, initial encounter

Diagnosis Code T66.XXXA

ICD-10: T66.XXXA
Short Description: Radiation sickness, unspecified, initial encounter
Long Description: Radiation sickness, unspecified, initial encounter
This is the 2018 version of the ICD-10-CM diagnosis code T66.XXXA

Valid for Submission
The code T66.XXXA is valid for submission for HIPAA-covered transactions.

Code Classification
  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Other and unspecified effects of external causes (T66-T78)
      • Radiation sickness, unspecified (T66)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code T66.XXXA is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)


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.

  • Acute non-infective otitis externa
  • Acute radiation disease
  • Acute radiation disease
  • Acute radiation nephritis
  • Acute radiation otitis externa
  • Adverse effect of radiation therapy
  • Anemia caused by physical agent
  • Anemia caused by radiation
  • Aplastic anemia caused by radiation
  • Chronic radiation nephritis
  • Chronic radiation sickness
  • Disorder caused by exposure to ionizing radiation
  • Early radiation dermatitis
  • Effects of occupational exposure to radiation
  • Effects of overexposure to electromagnetic radiation
  • Infertile
  • Infertility caused by radiation
  • Nausea and vomiting
  • Neutropenia caused by irradiation
  • Occupational injury
  • Radiation dermatitis
  • Radiation nephritis
  • Radiation recall syndrome
  • Radiation sickness
  • Radiation therapy complication
  • Radiation-induced nausea and vomiting
  • Subacute radiation sickness
  • Toxicity due to radiotherapy

Information for Patients

Radiation Exposure

Radiation is energy that travels in the form of waves or high-speed particles. It occurs naturally in sunlight. Man-made radiation is used in X-rays, nuclear weapons, nuclear power plants and cancer treatment.

If you are exposed to small amounts of radiation over a long time, it raises your risk of cancer. It can also cause mutations in your genes, which you could pass on to any children you have after the exposure. A lot of radiation over a short period, such as from a radiation emergency, can cause burns or radiation sickness. Symptoms of radiation sickness include nausea, weakness, hair loss, skin burns and reduced organ function. If the exposure is large enough, it can cause premature aging or even death. You may be able to take medicine to reduce the radioactive material in your body.

Environmental Protection Agency

  • Radiation sickness (Medical Encyclopedia)

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