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ICD-10-CM Code for Ill-defined and unknown cause of mortality R99

ICD-10 code R99 for Ill-defined and unknown cause of mortality is a medical classification as listed by WHO under the range - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified .

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Official Long Descriptor

Ill-defined and unknown cause of mortality
Death (unexplained) NOS
Unspecified cause of mortality

Additional/Related Information

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Get crucial instructions for accurate ICD-10-CM R99 coding with all applicable Excludes 1 and Excludes 2 notes from the section level conveniently shown with each code.
This section shows you chapter-specific coding guidelines to increase your understanding and correct usage of the target ICD-10-CM Volume 1 code.

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R09.89-Other specified symptoms and signs involving the circulatory and respiratory systems-question
Hi everyone, If I have a patient who is having an abdominal duplex (93978) and they do not meet criteria for the test (no diagnosis that are listed on the MEDICARE LCD list), but have a range of othe... [ Read More ]
Exclude1
[QUOTE="thomas7331, post: 489562, member: 5404"] You would only code the colitis. When you have a related definitive diagnosis, the guidelines state that you should not code the symptoms that are ass... [ Read More ]
Exclude1
You would only code the colitis. When you have a related definitive diagnosis, the guidelines state that you should not code the symptoms that are associated with that diagnosis, which in this case w... [ Read More ]
Patient died during exam, help? never seen this before
[b]Patient Died[/b] Hi Do not use dx. R99 it is for patient found dead somewhere. Just document their very severe illness with provider in note time died, date and disease reasons. Did the pt. hav... [ Read More ]
Abdominal pain coding
Hello Denise, I agree with the unspecified code of R10.9 when the location of the pain is not directly documented. Just "right side" is not specific enough What else would you use? If it was saying Up... [ Read More ]
Dx Coding for Hydrocephalus Patients
[b]Would probably just code for hydrocephalus + shunt[/b] [QUOTE="maryv22, post: 416706, member: 292709"]After reviewing below scenario, how would you code and sequence the diagnoses? - Would you cod... [ Read More ]
Deceased
[QUOTE="mitchellde, post: 411993, member: 30657"]Please read the coding guidelines. It states: Code R99, Ill-defined and unknown cause of mortality, is only for use in the very limited circumstance w... [ Read More ]
Deceased
[QUOTE="bink1018, post: 411992, member: 52458"]Hello, Brain death would not be appropriate to code unless the provider specifically documents the patient suffered brain death. I believe the appropria... [ Read More ]
Deceased
[b]Death NOS vs Brain Death[/b] Hello, Brain death would not be appropriate to code unless the provider specifically documents the patient suffered brain death. I believe the appropriate code would ... [ Read More ]
SIDS in ICD-10
Thank you, Debra! Do you know what the reason might be for the decision to leave it out of ICD-10-CM? It seems like we are using R99 for SIDS now, but I know 798.0 in ICD-9-CM was SIDS-specific, so I... [ Read More ]
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