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T66

Radiation sickness, unspecified

Non-billableCategory

Chapter: 19. Injury, poisoning and certain other consequences of external causes

Section: T66-T78 - Other and unspecified effects of external causes

7th Character Required

The appropriate 7th character is to be added to code T66

A - initial encounter

D - subsequent encounter

S - sequela

Coding Guidelines

Excludes1 (Mutually Exclusive)

These codes should never be used together with T66

  • specified adverse effects of radiation, such as:
  • T20.-T31 - burns (T20-T31)
  • C91.-C95 - leukemia (C91-C95)
  • K52.0 - radiation gastroenteritis and colitis (K52.0)
  • J70.0 - radiation pneumonitis (J70.0)
  • L55.-L59 - radiation related disorders of the skin and subcutaneous tissue (L55-L59)
  • sunburn (L55.-)

Specific Codes (3)

T66.XXXABillable

Radiation sickness, unspecified, initial encounter

T66.XXXDBillable

Radiation sickness, unspecified, subsequent encounter

T66.XXXSBillable

Radiation sickness, unspecified, sequela

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