R99
BillableIll-defined and unknown cause of mortality
Ill-defined and unknown cause of mortality
Status
Billable / Specific
Block
R99-R99
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Death (unexplained) NOS
- Unspecified cause of mortality
Also Known As / Clinical Terms
SNOMED CT
- Death by immolation5062002
- Immolation5062002
- Postoperative death5331006
- Postpartum maternal death5866003
- Accidental death7878000
- Natural death with unknown cause9855000
- PND - Perinatal death10588007
- Perinatal death10588007
- Perinatal mortality10588007
- Death during anaesthetic induction13234002
- Death during anesthetic induction13234002
- Death by hanging14035003
- Found dead15355001
- Unattended death15355001
- Death in hospital16983000
- Patient pronounced dead18632008
- Patient status determination, deceased18632008
- Non-traffic vehicular accidental death18893004
- Sudden death26636000
- Death due to trampling26878008
- Intrapartum maternal death27792001
- Antepartum maternal death31868001
- Sudden death of unknown cause during the puerperium34468006
- Death due to natural causes38605008
- Natural death38605008
- Natural death with probable cause suspected39399006
- Natural death with suspected cause39399006
- Accidental death in public place44633000
- Iatrogenic death45216005
- Anaesthetic death49380000
- Anesthetic death49380000
- Unexpected death49713007
- Undetermined manner of death, natural causes suspected50105002
- Instantaneous death50514002
- Cot death51178009
- Crib death51178009
- SIDS - sudden infant death syndrome51178009
- Sudden infant death syndrome51178009
- Unexpected sudden death of infant51178009
- Intraoperative death52136000
- Death in less than 24 hours from onset of symptoms53559009
- Death occurring less than 24 hours from onset of symptoms53559009
- Maternal death59283008
- Maternal mortality59283008
- BID - Brought in dead63238001
- Brought in dead63238001
- D.O.A.63238001
- Dead on arrival at hospital63238001
- Death, manner undetermined65037004
- Open verdict65037004
- Undetermined manner of death65037004
- Accidental death in home65819004
- Natural death with proved cause66360006
- Death by cremation67786008
- Death by fire67786008
- Probable suicide68023007
- Undetermined manner of death, suicide suspected68023007
- Unexpected sudden death of adult70055007
- Death unattended by physician74148000
- Death by asphyxiation74332007
- Death by suffocation74332007
- Accidental death in industrial place74660000
- Accidental death in work place74660000
- Natural death with proved cause without autopsy78857004
- Traffic vehicular accidental death79867001
- Natural death reportable to medicolegal authority81840004
- Natural death with proved cause by autopsy82621005
- Death from overwork87281005
- Karoshi87281005
- Death - cause unknown87309006
- Death of unknown cause87309006
- Died without sign of disease89816009
- Unexplained sudden death90049009
- Sudden infant death160957000
- Died in hospital183676005
- Found dead at accident site184300000
- Death from sequela of direct obstetric cause200156003
- Direct maternal death237358009
- Late maternal death237360006
- Infant death240297000
- Accidentally killed242055009
- Sudden death, cause unknown274644002
- Late neonatal death276505002
- Neonatal death276506001
- Newborn death276506001
- Maternal death - perinatal288260005
- Found dead in bed300990005
- Intraoperative or immediately postoperative death in an ASA (American Society of Anesthesiologists) Class I patient370900009
- Intraoperative or immediately postoperative death in an American Society of Anesthesiologists Class I patient370900009
- Serious reportable event associated with product or device370901008
- Patient death or serious disability associated with the use of contaminated drugs, devices, or biologics provided by the healthcare facility370902001
- Patient death or serious disability associated with the use or function of a device in patient care, in which the device is used or functions other than as intended370903006
- Serious reportable event associated with patient protection370905004
- Patient death or serious disability associated with patient elopement (disappearance) for more than four hours370907007
- Serious reportable event associated with environment370917002
- Patient death or serious disability associated with an electric shock while being cared for in a healthcare facility370918007
- Patient death or serious disability associated with an electric shock whilst being cared for in a healthcare facility370918007
- Patient death or serious disability associated with a burn incurred from any source while being cared for in a healthcare facility370920005
- Patient death or serious disability associated with a burn incurred from any source whilst being cared for in a healthcare facility370920005
- Patient death associated with a fall while being cared for in a healthcare facility370921009
- Patient death associated with a fall whilst being cared for in a healthcare facility370921009
- Patient death or serious disability associated with the use of restraints or bedrails while being cared for in a healthcare facility370922002
- Patient death or serious disability associated with the use of restraints or bedrails whilst being cared for in a healthcare facility370922002
- Patient deceased during stay (discharge status = dead)371828006
- Death due to chemotherapy toxicity373866000
- Death due to radiotherapy toxicity373867009
- Postneonatal death391100008
- Early neonatal death391181005
- Perioperative death398226000
- Adverse event outcome405533003
- Adverse incident outcome405533003
- Adverse incident resulting in death405535005
- Preoperative anaesthetic death415169009
- Preoperative anesthetic death415169009
- Suspicious death418309003
- Dead - sudden death418362005
- Dead - expected418646009
- Dead419099009
- Died419099009
- Has died419099009
- Dead - suspicious death419393000
- Death419620001
- Dead - unexpected419697005
- ECOG performance status - grade 5423409001
- Eastern Cooperative Oncology Group performance status - grade 5423409001
- ECOG performance status finding424122007
- Eastern Cooperative Oncology Group performance status finding424122007
- Unattended death of unknown cause441760003
- Indirect maternal death698714004
- Death from sequela of indirect maternal cause698715003
- Dead - death without witness702710003
- Unwitnessed death702710003
- Fellman syndrome703388005
- Finnish lactic acidosis with hepatic hemosiderosis703388005
- Finnish lethal neonatal metabolic syndrome703388005
- GRACILE syndrome703388005
- Growth retardation, amino aciduria, cholestasis, iron overload, lactic acidosis, and early death703388005
- Sudden infant death with dysgenesis of testes syndrome711157000
- Died in community hospital713049009
- Died in learning disability unit713050009
- Died in mental health unit713051008
- Died in ambulance714342001
- Autopsy performed716347009
- Autopsy pending716348004
- SUDEP - sudden unexpected death in epilepsy719425009
- Sudden unexpected death in epilepsy719425009
- Death from indirect obstetric cause occurring more than 42 days but less than one year after delivery720529005
- Death from direct obstetric cause occurring more than 42 days but less than one year after delivery720534009
- Killed740603007
- Postmortem rigidity827071000
- Rigor mortis827071000
- Died at home876879006
- Died in care home876880009
- Died in general practice premises876881008
- Died in hospice876882001
- Died during operation876883006
- Died in nursing home876884000
- Died in street876885004
- Died in usual place of residence876886003
- Fetal disorder due to maternal death1263691008
- Postmortem plain X-ray abnormal1295404006
- Clavien-Dindo classification finding1367518008
- Clavien-Dindo classification grade V1367527009
- Child death598121000005103
- Cremation449961000124104
- Patient status determination, deceased and body cremated449961000124104
- Death associated with influenza661761000124109
- Mortality associated with influenza661761000124109
- Death associated with respiratory syncytial virus infection761671000124100
- Mortality associated with respiratory syncytial virus infection761671000124100
- Death in home440081000124100
- Death in residence440081000124100
- Death in hospice440071000124103
- Death in hospital-based emergency department440041000124106
- Death in hospital-based emergency department or outpatient department450391000124102
- Death in hospital-based outpatient department440031000124101
- Death in long term care facility440021000124104
- Death in nursing home440061000124105
- Death in nursing home or long term care facility450381000124100
- Donation449951000124101
- Patient status determination, deceased and body donated449951000124101
- Entombment449931000124108
- Patient status determination, deceased and entombed449931000124108
- Patient status determination, deceased and buried449971000124106
- Patient status determination, deceased and removed from state449941000124103
- Removal from state449941000124103
UMLS
- Death (unexplained) NOSC0277589
- Death - cause unknownC0277589
- Death by Undetermined CauseC0277589
- Death of unknown causeC0277589
- Death of unknown cause (event)C0277589
- Death unexplainedC0277589
- Found dead (cause undetermined)C0277589
- Unknown Cause of DeathC0277589
- Unknown cause of deathC0277589
- death of unknown causeC0277589
- deaths unexplainedC0277589
- unexplained deathC0277589
- Ill-defined and unknown cause of mortalityC0478195
- Ill-defined and unknown cause of mortality (R99)C0478195
- Unspecified cause of mortalityC1408354
Frequently Asked Questions
What is ICD-10 code R99?
ICD-10-CM code R99 represents "Ill-defined and unknown cause of mortality". It is a billable/specific code that can be used on a claim.
Is R99 a billable code?
Yes, R99 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R99 in?
R99 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What SNOMED CT codes does R99 map to?
R99 maps to 134 SNOMED CT concepts: 7878000, 65819004, 74660000, 44633000, 242055009, and 129 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R99?
R99 is linked to 3 UMLS Concept Unique Identifiers: C0277589, C0478195, C1408354. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.