531.90
531.40 280.0
531.40 280.0
A non-healing skin lesion is also referred to as a chronic ulcer. If there is no specified site, then the correct ICD-9 code would be 707.9 for an ulcer of the skin not otherwise specified.
It's a gastric ulcer, so 531.90 or other variations of 531.xx as indicated in the patient's record.
540.0
yes
An ischial ulcer is a medical condition (disease)that requires an ICD-9 code; not a CPT code, which is used for medical procedures.707.04 (pressure ulcer, hip)707.20 (pressure ulcer, unspecified stage) ** An additional code is required to identify the stage of the pressure ulcer (707.20-707.25).
578.9
the icd-9 code for chronic tonsillitis is 474.00
code personal history of peptic ulcer
78264
Chronic aspiration risk