X31⚠ Requires 7th Character

Exposure to excessive natural cold

Related Codes· Exposure to forces of nature (X30-X39)

X30Exposure to excessive natural heatX32Exposure to sunlightX34EarthquakeX35Volcanic eruptionX36Avalanche, landslide and other earth movementsX37Cataclysmic storm

⚠ 7th Character Required

The appropriate 7th character is to be added to code X31

This code is not valid for billing without a 7th character. Append one of the following to X31:

Ainitial encounterX31XXXADsubsequent encounterX31XXXDSsequelaX31XXXS

Sub-codes of X31(3)

X31 is a non-billable header. Select a sub-code to bill.

X31AExposure to excessive natural cold, initial encounter✓ BillableX31DExposure to excessive natural cold, subsequent encounter✓ BillableX31SExposure to excessive natural cold, sequela✓ Billable

Inclusion Terms

✗ Excludes 1(Not coded here)

  • •cold of man-made origin (W93.-)
  • •contact with or inhalation of dry ice (W93.-)
  • •contact with or inhalation of liquefied gas (W93.-)

Code Hierarchy

┌20External causes of morbidity (V00-Y99)├X30-X39Exposure to forces of nature (X30-X39)├X31Exposure to excessive natural cold
└X31Exposure to excessive natural cold

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