Chapter XVIII

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
(R00-R99)

Ill-defined and unknown causes of mortality
(R95-R99)


Excludes:	fetal death of unspecified cause ( P95 ) obstetric death NOS ( O95 )


R95		Sudden infant death syndrome


R96		Other sudden death, cause unknown
		Excludes:	sudden: · cardiac death, so described ( I46.1 ) · infant death syndrome ( R95 )
R96.0		Instantaneous death
R96.1		Death occurring less than 24 hours from onset of symptoms, not otherwise explained
		Death known not to be violent or instantaneous for which no cause can be discovered Death without sign of disease


R98		Unattended death
		Death in circumstances where the body of the deceased was found and no cause could be discovered Found dead


R99		Other ill-defined and unspecified causes of mortality
		Death NOS Unknown cause of mortality