Chapter IX - Diseases of the circulatory system Flashcards
When can the code I25.2 Old myocardial infarction be assigned?
- For patients with an old/previous MI (i.e. over 4 weeks (28 days) ago)
- or the time the MI occured has not been stated by the responsible consultant
- and they are not receiving treatment for the MI.
How must peripheral vascular disease (PVD) be coded?
If the cause is known, this should be coded and not the PVD.
(PVD is more often a symptom of atheroma and arteriosclerosis)
When must a code from I22 Subsequent myocardial infarction be used?
Only to classify any subsequent/further MI, occuring within 4 weeks (28 days) from onset of a previous infarction.
This applies regardless of the site of the infarction.
At which category in Chapter IX are 5th characters for use and what do they identify?
I70.- Atherosclerosis
5th characters 0 &1.
0 = without gangrene (default, if unknown)
1 = with gangrene
When can the code I10.X be used?
Only if the patient has been diagnosed with hypertension.
Must not be used to record a diagnosis of raised/elevated BP without mention of hypertension.
When hypertension (I10-I15) is present with ischemic heart disease (I20-I25) or cerebrovascular disease (I60-I69), which position must the hypertension be coded in?
Any seconday position
When can codes from categories I11.- Hypertensive heart disease , I12.- Hypertensive renal disease and I13.- Hypertensive heart and renal disease be assigned?
Only if the responsible consultant clearly states a link between hypertension and heart disease (I50.- and I51.4-I51.9) or renal disease (N00-N07, N18.- N19.- or N26.-).
If there is no link the conditions should be coded seperately.
How must CKD due to hypertension be coded?
A code for the CKD (N18.-) with a code for Hypertensive renal disease I12.- .
Sequencing depends on the main condition treated.
If a patient is admitted to hospital within 4 weeks (28 days) of an acute MI for treatment/investigation of another condition, how should this be coded?
The code I24.9 Acute ischaemic heart disease, unspecified must be assigned in a secondary position.
If a patient with CAD is admitted and treated for an acute MI, and is transferred from one hospital provider to another for an intervention to treat the CAD, how should this be coded?
The CAD must be assigned as the primary diagnosis.
If a patient with CAD is admitted and treated for an acute MI and CAD at the same trust, how should this be recorded?
The acute MI should be recorded in primary, as it is considered more clinically significant.
If cardiac arrest with successful resuscitation occurs, how should this be coded?
Must always be coded when it has occured (I46.0 Cardiaqc arrest with succesful resuscitation).
If the underlying cause of the cardiac arrest is documented, this must be sequenced before I46.0
