h. Code also. Used when more than one code is necessary to fully identify a
given condition or procedure. Code also is used in Volume 1 and Volume 3 to code the
cause of the condition (etiology) or each component of the procedure.
EXAMPLE: Volume 1
774.5 Perinatal jaundice from other causes
Code also underlying cause, as:
congenital obstruction of bile duct (751.61)
galactosemia (271.1)
mucoviscidosis (277.00-277.01)
EXAMPLE: Volume 3
42.42 Total esophagectomy
Code also any synchronous:
gastrostomy (43.1-43.2)
interposition or anastomosis other than
end-to-end (42.51-42.69)
Excludes: esophagogastrectomy (43.99)
i. Use additional code. Appears only in Volume 1. More than one code is used
to more accurately describe the diagnosis. When coding in a military MTF disregard "if
desired" and assign the additional code.
EXAMPLE:
491 Chronic bronchitis
Use additional code, if desired, to
identify acute exacerbation (466.0-466.1)
MD0753
2-8