Heart Conditions and Hypertension
1. Code the condition(s) resulting from the acute cerebrovascular disease only if stated
to be a residual and is still present at discharge. If conditions are stated to be transient,
do not code.
DIAGNOSIS: Left common carotid artery occlusion. Transient
2. Certain disease conditions classified to the circulatory system are assigned
combination codes (heart, renal, and hypertension) when diagnostic statements clearly
indicate a cause-and-effect relationship between the condition(s) and hypertension.
DIAGNOSIS: Congestive heart failure due to hypertensive
DIAGNOSIS: Congestive heart failure with hypertension,
PRINCIPLE XIV. INJURIES
1. Chapter 17, entitled Injuries and Poisoning, comprise a major section of ICD-9-CM.
Categories 8-999 include fractures, dislocations, sprains, burns, poisoning,
complications of surgical and medical care, and various other types of trauma.
2. Although a number of combination codes are provided for classifying multiple
injuries of the same type (that is, fractures involving more than one anatomical location
and burns of multiple sites, etc), the basic coding rule should be followed when
possible. The basic coding rule states: "Multiple coding is not used if the classification
provides a combination code that fully describes all of the elements of the diagnostic or
procedure statement." Injuries classifiable to more than one subcategory should be
coded separately whenever possible.
3. ICD-9-CM provides subcategory codes to identify injuries considered to be
complicated for categories 872-897. Burns classified to categories 94-949 do not
provide codes at fourth or fifth-digit level to identify complications. Diagnostic
statements specifying burns as infected will also use code 958.3 as an additional code.
4. Late Effects of Injuries. Late effects of diseases and injuries are classified to the
condition identifying the residual. An additional code is used to identify the cause of the
late effect. (See principle XV.)