It starts with 533, but without additional information, it's hard to get more specific. If you know the location, duration, and presence of obstruction, you can do better.
code personal history of peptic ulcer
536.9
ICD 9 CM Code -707.14 Ulcer of heel and midfoot. (Plantar surface of midfoot).
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).
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.
998.11
531.40 280.0
531.40 280.0
707.07 along with the appropriate diabetic code.
535.0 is the code for gastritis. It's separated by presence of bleeding, not location in the stomach.
It's a gastric ulcer, so 531.90 or other variations of 531.xx as indicated in the patient's record.
578.9 is the ICD9 code for GI bleeding if you don't know where it's coming from. There are additional codes if you can narrow down the diagnosis.