The I&D medical abbreviation stands for incision and drainage, a procedure in which a clinician makes a small cut into an abscess, a walled off pocket of pus, so the pus can drain out. Few minor procedures are done more often in emergency departments, urgent care and surgical clinics.
People read it as "I and D," and it may be typed as I&D, I and D or I & D. It turns up on visit summaries, wound care instructions and operative notes for larger infections. This page explains the procedure in plain terms, decodes a sample note and covers the terms that come with it.
At a glance
Stands for
Incision and drainageWritten as
I&D, I and D, I & DUsed for
Skin abscesses, infected cysts, some deeper collectionsWhere you see it
ED and urgent care notes, wound clinic records, operative notesOften with
Packing, culture, antibiotics in some casesRelated diagnosis
SSTI, skin and soft tissue infection
What the I&D medical abbreviation describes
An abscess forms when the body walls off an infection under the skin. Pus collects inside, which makes the area swollen, warm and painful. Antibiotics alone often struggle to reach the center of that pocket, so opening it is the main treatment for many abscesses. In charts, the infection itself is often filed under SSTI, skin and soft tissue infection.
During an I and D, the skin is cleaned and numbed with a local anesthetic. The clinician makes a small cut, lets the pus out, breaks up any inner pockets and rinses the cavity. Larger or deeper abscesses may be drained in an operating room under anesthesia.
A sample I & D note, decoded
| Words | Meaning |
|---|---|
| I&D | Incision and drainage |
| L axillary abscess | Abscess in the left armpit |
| packed with gauze | A strip of gauze placed in the cavity to keep it draining |
| culture sent | A sample of pus went to the lab to identify the germ |
Urgent care discharge sheet: "I&D performed, return in 48 hours for packing removal." The abscess was opened, packing was left in, and the patient is asked to come back so the packing can be checked or taken out. This shows the wording only, not a plan for anyone.
Aftercare terms you may see
Not every drained abscess is packed; some are left to drain on their own under a dressing. Instructions often cover warm soaks, dressing changes and signs to watch, such as spreading redness, fever or pus returning. Antibiotics, written ABX, are added in some cases, depending on size, location and the patient's health.
Culture results may name the germ and which antibiotics work against it. Some resistant germs are tracked under terms like MDRO, multidrug resistant organism.
Wound care steps differ from one clinic to the next. Follow the written instructions from the team that did the procedure, and contact them with any questions about healing.
I&D compared with similar procedure words
| Term | Meaning |
|---|---|
| I&D | Cut open and drain a collection of pus |
| Needle aspiration | Draw fluid out through a needle without a cut |
| Debridement | Remove dead or damaged tissue from a wound |
| Excision | Cut out tissue entirely, such as a whole cyst |
A washout in the operating room for an infected joint or deep wound is sometimes also charted as an I&D. The surgical abbreviations hub lists other procedure shorthand.
Charting tips for new staff
Record the site and side, the approximate size of the abscess, how much pus drained and what it looked like, whether packing was placed and whether a culture was sent. Nurses also chart the patient's pain and the dressing applied. Clear location detail matters because people can have more than one abscess, and the follow up visit depends on knowing exactly which one was opened.
Frequently asked questions
What does I and D mean in medical terms?
I and D means incision and drainage. A small cut is made into an abscess so the pus can drain out, which relieves pressure and helps the infection clear.
Does an I&D hurt?
The area is usually numbed first with a local anesthetic, though the numbing shot and some pressure can be felt. Larger abscesses may be drained with sedation or anesthesia.
Why is gauze packing put in after an I&D?
Packing can keep the opening from closing too early so the cavity keeps draining. Not every abscess needs it, and the clinician decides based on size and depth.
Will I need antibiotics after an I&D?
Sometimes. Many small abscesses heal with drainage alone, while others need antibiotics too. The treating clinician makes that decision.