ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 18 R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified /
R99 Ill-defined and unknown cause of mortality /
R99 Ill-defined and unknown cause of mortality
Billable ICD-10-CM Code R99
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R99
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Ill-defined and unknown cause of mortality
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| Death (unexplained) NOS | |||
| Unspecified cause of mortality |