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289 Other diseases of blood and blood-forming organs
289.0 Secondary polycythemiaPolycythemia: Polycythemia, due to
due to: hypoxemic
fall in plasma volume nephrogenous
high altitude relative
Excludes: polycythemia neonatorum (776.4)
polycythemia vera (238.4)
289.1 Chronic lymphadenitisChronic:
adenitis, any lymph node except mesenteric
lymphadenitis, any lymph node except mesenteric
Excludes: acute lymphadenitis (683)
enlarged glands NOS (785.6)
289.2 Nonspecific mesenteric lymphadenitisMesenteric lymphadenitis (acute) (chronic)
289.3 Lymphadenitis, unspecified, except mesenteric
289.5 Other diseases of spleenAtrophy of spleen Chronic congestive splenomegaly
Cyst of spleen Fibrosis of spleen:
Infarction of spleen NOS
Rupture, nontraumatic of spleen Perisplenitis
Excludes: splenomegaly NOS (789.2)
289.6 Familial polycythemiaFamilial:
289.7 MethemoglobinemiaCongenital NADH-methemoglobin-reductase deficiency
Hemoglobin M disease
acquired (with sulfhemoglobinemia)
Use additional E code, if desired, to identify cause
289.9 UnspecifiedV. MENTAL DISORDERS
This section of the Classification differs from the others in that it includes
a glossary, prepared after consultation with experts from many different
countries, defining the contents of the rubrics. This difference is
considered to be justified because of the special problems posed for
psychiatrists by the relative lack of independent laboratory information upon
which to base their diagnoses. The diagnosis of many of the most important
mental disorders still relies largely upon descriptions of abnormal experience
and behavior, and without some guidance in the form of a glossary that can
serve as a common frame of reference, psychiatric communications easily become
unsatisfactory at both clinical and statistical levels.
Many well-known terms have different meanings in current use. It is important
for the user to use the glossary descriptions and not merely the category
titles when searching for the best fit for the condition he is trying to code.
This is particularly important if a separate national glossary also exists.
The instructions "Use additional code to identify..." are important because
of the nature of many psychiatric conditions in which two or more codes are
necessary to describe the condition and the associated or causal factors.
It should be used whenever possible.
Mental disorders in which impairment of mental function has developed to a
degree that interferes grossly with insight, ability to meet some ordinary
demands of life or to maintain adequate contact with reality. It is not an
exact or well defined term. Mental retardation is excluded.
ORGANIC PSYCHOTIC CONDITIONS (290-294)
Syndromes in which there is impairment of orientation, memory, comprehension,
calculation, learning capacity and judgement. These are the essential
features but there may also be shallowness or lability of affect, or a more
persistent disturbance of mood, lowering of ethical standards and exaggeration
or emergence of personality traits, and diminished capacity for independent
Psychoses of the types classifiable to 295-298 and without the above features
are excluded even though they may be associated with organic conditions.
The term "dementia" in this glossary includes organic psychoses as just
specified, of a chronic or progressive nature, which if untreated are usually
irreversible and terminal.
The term "delirium" in this glossary includes organic psychoses with a short
course in which the above features are overshadowed by clouded consciousness,
confusion, disorientation, delusions, illusions and often vivid
Includes: psychotic organic brain syndrome
Excludes: nonpsychotic syndromes of organic etiology (see 310.-)
psychoses classifiable to 295-298 and without the above
features but associated with physical disease, injury, or
condition affecting the brain [e.g., following childbirth]
code to 295-298 and use additional code to identify the
associated physical condition.
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