CNA charting means recording every aspect of the care you provide, from meals and bathing to vital signs and skin checks, in a way that’s accurate, timely, and objective. Your documentation feeds directly into each resident’s official medical record, and it’s used by nurses, physicians, and assessment teams to make care decisions. Getting it right protects your residents, your nursing team, and yourself.
What You’re Actually Documenting
As a CNA, you chart activities of daily living (ADLs) and the observations you make while performing them. The core categories include dressing, bathing, eating, toileting, repositioning in bed, transferring, and walking. For each task, you record how much help the resident needed: independent, supervised, hands-on assist, or total assist.
You also document assistive devices the resident uses, such as hearing aids, glasses, walkers, whiteboards, or photo books for communication. This matters because an MDS nurse reviews your notes to complete federally required assessments of each resident’s abilities. If your charting is vague or incomplete, those assessments will be inaccurate, which can affect the resident’s care plan and the facility’s reimbursement.
Vital Signs and Normal Ranges
When you take vital signs, you’ll record temperature, pulse, respirations, and blood pressure. Knowing the normal ranges helps you chart confidently and recognize when something needs to be reported immediately:
- Pulse: 60 to 100 beats per minute for a healthy adult at rest
- Respirations: 12 to 16 breaths per minute at rest
- Blood pressure: A systolic reading (top number) of 180 or higher, or a diastolic reading (bottom number) of 110 or higher, is a medical emergency
Record the exact numbers you measure, not descriptions like “normal” or “high.” If a reading falls outside the expected range, document it and report it to the charge nurse right away. Write down the time you took the reading and the time you reported it.
Intake, Output, and Meal Documentation
Fluid intake and output are measured in milliliters (mL). Every drink your resident consumes counts as intake: water, juice, coffee, soup broth, even ice chips (measured at roughly half their volume once melted). Output includes urine, vomit, and any drainage you can measure. Your facility will have a reference sheet converting common container sizes to mL, so you’re not guessing.
For meals, most facilities use a percentage system. You estimate how much of the served food the resident actually ate: 0%, 25%, 50%, 75%, or 100%. Be specific about which items were eaten when your facility’s form allows it. A resident who drank all their milk but ate none of their solid food has a very different nutritional picture than one who ate half of everything.
Skin Observations
Skin checks are one of the most legally significant parts of your charting. Every time you bathe, reposition, or change a resident, you should be looking at their skin and documenting what you see. The key things to note are temperature, color, moisture level, and whether the skin is intact or broken.
Pay special attention to pressure points: the back of the head, ears, shoulder blades, elbows, inner and outer knees, the tailbone area, hips, inner and outer ankles, and heels. These are the spots where pressure injuries develop first. If you notice any redness, warmth, swelling, or broken skin, document the exact location, what it looks like, and its approximate size. Then report it to the nurse on duty. Your early observation can prevent a small red spot from becoming a serious wound.
Bowel and Bladder Charting
Many facilities use the Bristol Stool Chart, a seven-point scale that gives you a standard way to describe bowel movements without subjective guesswork:
- Type 1: Separate hard lumps, like pebbles
- Type 2: Lumpy and sausage-shaped
- Type 3: Sausage-shaped with cracks on the surface
- Type 4: Smooth, soft, snakelike
- Type 5: Soft blobs with clear edges
- Type 6: Fluffy, mushy pieces with ragged edges
- Type 7: Entirely liquid, no solid pieces
Even if your facility doesn’t formally use this scale, these descriptors give you precise language. Chart the time, consistency, approximate amount (small, moderate, large), and color. For urinary output, note the amount (measured in mL when on I&O tracking), color, clarity, and any unusual odor. Changes in bowel or bladder patterns can be early signs of infection, dehydration, or medication side effects.
Common Abbreviations You’ll Use Daily
Charting uses a set of standard medical abbreviations. Learning them speeds up your documentation and keeps your notes consistent with what other staff write. Here are the ones you’ll encounter most:
- VS: vital signs
- BP: blood pressure
- I&O: intake and output
- ROM: range of motion
- OOB: out of bed
- HOB: head of bed
- BRP: bathroom privileges
- SOB: shortness of breath
- NPO: nothing by mouth
- c/o: complains of
- q 2 hr: every two hours
- bid/tid/qid: twice, three times, or four times a day
- HS: hour of sleep (bedtime)
- DNR: do not resuscitate
Only use abbreviations your facility has approved. Some abbreviations that are common in one setting are banned in another because they can be misread.
Objective Language and Why It Matters
The single most important charting skill is writing what you observed, not what you interpreted. This distinction has real legal weight. If a resident is found on the floor, you write: “Resident found lying on the floor next to the bed at 2:15 a.m.” You do not write: “Resident fell out of bed.” You didn’t see the fall happen, so writing it that way is an assumption.
Stick to facts you can see, hear, measure, or count. Instead of “resident seemed agitated,” write “resident was pacing in the hallway, repeatedly saying ‘I want to go home.'” Instead of “ate poorly,” write “ate 25% of lunch, refused entrée, drank 120 mL of juice.” Objective language protects the resident by giving the care team a clear picture. It also protects you if your documentation is ever reviewed in a legal proceeding. Incomplete, inaccurate, or subjective charting can jeopardize the legal rights of both patients and healthcare providers.
Paper Charts vs. Electronic Systems
Your facility will use either paper flow sheets or an electronic health record system, sometimes both. Common software platforms in long-term care and CNA practice settings include Epic, Cerner, Meditech, Allscripts, and NextGen. Each has a slightly different interface, but they all work on the same principle: you select the resident, navigate to the right section (ADLs, vitals, I&O), and enter your data, often by choosing from dropdown menus or checkboxes rather than typing free text.
Electronic systems let you document in real time, which is a significant advantage. With paper, many CNAs jot notes on a separate sheet during their shift and transfer them to the official chart later. If you do this, transfer your notes as soon as possible while the details are fresh. Charting from memory at the end of a 12-hour shift is where errors creep in.
Regardless of format, every entry needs a date, a time, and your identification (signature on paper, login credentials on digital systems). Never chart under someone else’s name or use another person’s login. Never go back and alter a previous entry without following your facility’s correction procedure, which typically involves drawing a single line through the error on paper charts or using the system’s amendment function in digital records.
Timeliness and Completeness
Chart as close to the time of care as you can. The American Nurses Association’s documentation standards specify that entries should be “timely, contemporaneous, and sequential.” In practical terms, this means documenting within the same shift, ideally within an hour or two of providing the care. Late entries are far more likely to contain inaccuracies, and they carry less credibility if questions arise later.
Completeness is equally critical. In healthcare documentation, there’s a widely understood principle: if it wasn’t charted, it wasn’t done. Even if you provided excellent care, the absence of documentation means there’s no proof. If a resident later develops a pressure injury and there’s no record of your repositioning them every two hours, the assumption will be that repositioning didn’t happen.
Protecting Resident Privacy
Everything you chart is protected health information under federal privacy law. On a practical level, this means you log out of electronic systems every time you step away from a computer or tablet. You don’t leave paper charts open on a desk where visitors can see them. You never discuss a resident’s information with anyone who isn’t part of their care team, and you don’t photograph charts or records with your personal phone. Violations carry real consequences for both you and your facility, ranging from disciplinary action to federal fines.