ICD-10 codes for wheelchair-bound, bed-bound, and walking-impaired riders: Z99.3, Z74.01, and R26.2
Overview
In ICD-10-CM, wheelchair bound is coded Z99.3, Dependence on wheelchair. Bedridden is Z74.01, Bed confinement status, and chairridden is Z74.09, Other reduced mobility. Difficulty walking is R26.2, a symptom code. Clinicians assign these codes. A code never decides the vehicle: Medicare asks whether the rider can get up, walk, or sit in a chair or wheelchair, and each state sets its own test.
On this page
These are the ICD-10-CM codes a doctor, nurse or discharge planner writes on a ride request to show that a rider uses a wheelchair, stays in bed or has trouble walking. The ride company does not choose them. They are different from the one diagnosis code a payer may require on the claim itself, which is covered in diagnosis codes on NEMT claims. The descriptors below come from the FY 2027 code set, which took effect on October 1, 2026.
Which code matches which words
Use the clinician’s own wording to find the code, and read the official descriptor before relying on it.
| Code | Official descriptor | Lay wording it covers |
|---|---|---|
| Z99.3 | Dependence on wheelchair | Wheelchair bound, wheelchair dependent |
| Z74.01 | Bed confinement status | Bedridden, bedbound |
| Z74.09 | Other reduced mobility | Chairridden, reduced mobility |
| R26.2 | Difficulty in walking, not elsewhere classified | Difficulty walking |
| Z99.81 | Dependence on supplemental oxygen | Long-term oxygen |
| Z99.2 | Dependence on renal dialysis | Hemodialysis or peritoneal dialysis status |
What each code says and leaves out
- Z99.3. Its inclusion term is wheelchair confinement status. The tabular list says to code first the cause, such as muscular dystrophy (G71.0-) or obesity (E66.-).
- Z74.01. Its inclusion term is bedridden. It sits under Z74.0, Reduced mobility.
- Z74.09. It carries “chairridden” and “reduced mobility NOS” as inclusion terms, and an Excludes2 note for wheelchair dependence (Z99.3). The guidelines say an Excludes2 note means both codes may be used together when both apply.
- R26.2. It cannot be reported with falling (R29.6) because of an Excludes1 note. An Excludes2 note lets it sit alongside unsteadiness on feet (R26.81).
- Z99.81 and Z99.2. Z99.81 includes dependence on long-term oxygen. Z99.2 includes hemodialysis status, peritoneal dialysis status and presence of an arteriovenous shunt for dialysis.
The official guidelines list Z74.01 and category Z99 among the status codes. They add that categories Z93 to Z99 are for use only when there are no complications or malfunctions of the equipment on which the patient depends. R26.2 is a symptom code from the signs and symptoms chapter.
Why a code alone does not decide the vehicle
Payers set the test, and a single diagnosis code does not meet any of the tests described here. Medicare’s ambulance rule, 42 CFR 410.40(e)(1), covers an ambulance only when other means of transport are contraindicated, and it spells out what bed-confined means: the rider cannot get up from bed without assistance, cannot ambulate, and cannot sit in a chair or wheelchair. Bed confinement is not the only criterion. Z74.01 says the rider is bedridden, but it does not show all three. The test is explained further in NEMT versus ambulance.
How state ride forms ask for it
Forms differ on whether they want a diagnosis at all.
- Illinois. The HFS 2271 certificate asks for the rider’s primary and secondary diagnoses and a written medical necessity statement. It also has check boxes, including “wheelchair bound” under the lift choices and “bed confined” among the ambulance criteria. Authorization runs up to six months.
- Ohio. The ODM 03452 wheelchair van form has no diagnosis field. The practitioner certifies two things: the rider’s mobility device has to travel with them the whole way, and an ordinary car or public carrier is ruled out for the rider. Each form covers up to 90 days or one year.
The form tells you the level of service you may provide, and the medical necessity form entry covers what to keep on file. Book the vehicle to match: wheelchair transportation or stretcher transportation. On the dispatch board, HealthRide matches each rider’s wheelchair, stretcher and oxygen needs to a vehicle that can carry them.
Frequently asked questions
- What is the ICD-10 code for wheelchair bound?
- Z99.3, Dependence on wheelchair. Its inclusion term is "wheelchair confinement status," and the tabular list tells the coder to code first the cause of the dependence, such as muscular dystrophy (G71.0-) or obesity (E66.-). The same code serves for wheelchair dependent. These descriptors are the ones in the FY 2027 code set, in effect from October 1, 2026.
- What is the ICD-10 code for bedbound or bedridden?
- Z74.01, Bed confinement status, which lists "bedridden" as an inclusion term. The code is a status label. It does not meet a payer's stretcher test by itself, and Medicare's own test for ambulance transport asks three separate questions about getting up, walking, and sitting in a chair or wheelchair.
- Which code covers someone who can walk only with difficulty?
- R26.2, Difficulty in walking, not elsewhere classified. It is a symptom code, and the tabular list has an Excludes1 note for falling (R29.6) and an Excludes2 note for unsteadiness on feet (R26.81). Chairridden and other reduced mobility is Z74.09.
- Can a transportation company fill in the diagnosis on a ride form?
- No. Illinois prints on its HFS 2271 form that it must be completed by a licensed medical professional and that non-emergency transportation providers are not allowed to complete it. Ohio's wheelchair van form is signed by the certifying practitioner. The company's job is to book the level of service the form supports.
