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Chapter 21: External Causes of Morbidity

ICD-10-CM codes V00-Y99

Supplementary codes that describe the cause of injury or adverse event, such as motor vehicle accidents, falls, assaults, and accidental poisonings. These codes are never used as primary diagnoses; they are reported in addition to the injury codes from Chapter 19 to provide context for how the injury occurred.

V00-V09

V10-V19

V20-V29

V30-V39

V40-V49

V50-V59

V60-V69

V70-V79

V80-V89

V90-V94

V95-V97

V98-V99

W00-W19

W20-W49

W50-W64

W65-W74

W85-W99

X00-X08

X10-X19

X30-X39

X50-X50

X52-X58

X71-X83

X92-Y09

Y21-Y33

Y35-Y38

Y62-Y69

Y70-Y82

Y83-Y84

Y90-Y99

Frequently Asked Questions

What ICD-10 codes are in Chapter 21?

Chapter 21: External Causes of Morbidity covers ICD-10-CM codes V00-Y99. It contains 30 code blocks with 273 top-level categories.

What conditions does ICD-10 Chapter 21 cover?

Supplementary codes that describe the cause of injury or adverse event, such as motor vehicle accidents, falls, assaults, and accidental poisonings. These codes are never used as primary diagnoses; they are reported in addition to the injury codes from Chapter 19 to provide context for how the injury occurred. This chapter includes codes from V00-Y99.

How many code blocks are in Chapter 21?

Chapter 21 has 30 code blocks: V00-V09, V10-V19, V20-V29, V30-V39, and 26 more.

Is there an ICD-11 equivalent of ICD-10 Chapter 21?

ICD-11 reorganizes many chapters compared to ICD-10. Some conditions in Chapter 21 may appear in different ICD-11 chapters. Use the ICD-10 to ICD-11 converter to find specific code equivalents.

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