🏋️ PM&R Z Codes — Inpatient Coding Reference

Quick Orientation

Z codes in PM&R serve as reason for encounter, status indicators, and history codes. In inpatient rehab, they frequently function as the principal diagnosis when the patient is admitted solely for rehabilitation following an acute event. Understanding when a Z code drives PDX vs. when the underlying condition drives PDX is one of the most important distinctions in PM&R inpatient coding.

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📑 Table of Contents

1. Z Code Fundamentals in PM&R
2. Principal Diagnosis Rules
3. Z47 — Orthopedic Aftercare
4. Z48 — Post-Surgical Aftercare
5. Z51 — Other Aftercare
6. Z74 — Care Provider Dependency
7. Z82 — Family History
8. Z86 — Personal History
9. Z87 — Personal History Other
10. Z96 — Functional Implants
11. Z99 — Device Dependence
12. Encounter Type Coding Guidance
    • IRF Admissions
    • Acute Care Rehab Consults
    • Post-Surgical Rehabilitation
    • Spinal Cord and TBI Rehabilitation
13. CPT Code Reference
    • Therapeutic Procedures
    • Physical Therapy Evaluations
    • Occupational Therapy Evaluations
    • Speech-Language Pathology
    • Physical Agent Modalities
    • Neuromuscular and Functional
14. MS-DRG Considerations
15. Coding Scenarios
16. Common CDI Queries
17. Related Notes

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🧭 Z Code Fundamentals in PM&R

What Z Codes Do in PM&R

PM&R Z codes fall into four functional buckets:

Bucket	Purpose	Examples
Aftercare	Reason for encounter during recovery phase post-procedure/injury	Z47.-, Z48.-
Status	Patient currently has a device, implant, or dependency	Z96.-, Z99.-
Functional dependency	Documents care needs and functional limitations	Z74.-
History	Prior condition relevant to current care planning	Z82.-, Z86.-, Z87.-

Z Code PDX Rule — Critical

Per ICD-10-CM Official Guidelines Section I.C.21: Z codes may be sequenced as PDX when the circumstances of admission support it. In IRF settings, aftercare Z codes (Z47/Z48) are frequently the correct PDX. However, certain conditions — active disease, acute complications — must be coded as PDX instead, with the Z code as secondary.

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🔑 Principal Diagnosis Rules — When Z Codes Lead

PDX Decision Tree for PM&R Inpatient

Z code IS appropriate as PDX when:

• Patient is admitted solely for rehabilitation following a resolved acute event (e.g., post-THR rehab, post-stroke rehab once medically stable)
• The condition being rehabilitated is no longer in the acute phase
• No active medical condition requires acute-level care during the stay

Z code is NOT appropriate as PDX when:

• The underlying condition is still active and driving medical decision-making (e.g., active CVA with ongoing neurological changes)
• An acute complication is present on admission
• The patient is in an acute care hospital being seen by PM&R consult (the admitting diagnosis drives PDX, not the rehab reason)

Setting	Typical PDX
IRF admission post-THR	Z47.1 — Aftercare following joint replacement
IRF admission post-stroke (stable)	Z87.39 — Personal history of stroke / or Z51.89
Acute care, PM&R consult for CVA rehab	I63.- — Active cerebral infarction (not Z code)
Acute care, post-op day 2, PT ordered	Z48.- — Post-surgical aftercare (secondary)
IRF, SCI rehab	Z37.- — No; use S14.- or S24.- if acute; G82.- if chronic

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🩹 Z47 — Aftercare Following Orthopedic Procedures

Z47 — High-Frequency PM&R Codes

This is your workhorse category for post-orthopedic surgical rehab. Z47 codes are among the most common PDX codes in IRF admissions following orthopedic procedures.

Code	Description	Common Clinical Context
Z47.1	Aftercare following joint replacement surgery	Post-THR, TKR, shoulder arthroplasty
Z47.2	Encounter for removal of internal fixation device	Hardware removal follow-up
Z47.31	Aftercare following explantation of shoulder joint prosthesis	Prior to shoulder re-implantation
Z47.32	Aftercare following explantation of hip joint prosthesis	Prior to hip re-implantation
Z47.33	Aftercare following explantation of knee joint prosthesis	Prior to knee re-implantation
Z47.39	Aftercare following explantation of other joint prosthesis	Ankle, elbow, wrist
Z47.81	Encounter for orthopedic aftercare following surgical amputation	Post-amputation rehab, stump care
Z47.82	Encounter for orthopedic aftercare following scoliosis surgery	Post-spinal fusion rehab
Z47.89	Encounter for other orthopedic aftercare	Fracture aftercare, tendon repair aftercare

Coding pearls:

• Z47.1 does not specify which joint — always code the joint status with Z96.- (presence of prosthesis) as an additional code
• For bilateral joint replacements, code Z47.1 once; add bilateral Z96 status codes
• Post-amputation: pair Z47.81 with amputation status code (Z89.-) and prosthetic fitting code if applicable
• Z47.89 is the catch-all for fracture aftercare — fracture codes with 7th character D (subsequent encounter) are not used when Z47.89 is assigned as PDX per guidelines

Z47.89 vs. Fracture Code 7th Character D

Do not assign both Z47.89 and a fracture code with 7th character D for the same fracture. When Z47.89 is PDX, the fracture is captured as an additional diagnosis using the appropriate fracture code with 7th character D, or omitted if fully healed.

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🩺 Z48 — Aftercare Following Surgical Procedures

Z48 — Post-Surgical Aftercare

Z48 codes cover aftercare following non-orthopedic surgical procedures. In PM&R, these appear most often in post-cardiac surgery, post-transplant, and post-neurological surgery rehab admissions.

Z48.0 — Encounter for Attention to Dressings, Sutures, and Drains

Code	Description
Z48.00	Encounter for change or removal of nonsurgical wound dressing
Z48.01	Encounter for change or removal of surgical wound dressing
Z48.02	Encounter for removal of sutures
Z48.03	Encounter for change or removal of drains

Z48.1 — Encounter for Planned Postprocedural Wound Closure

Code	Description
Z48.1	Encounter for planned postprocedural wound closure

Z48.2 — Encounter for Aftercare Following Organ Transplant

Code	Description	PM&R Relevance
Z48.21	Encounter for aftercare following heart transplant	Cardiac rehab post-transplant
Z48.22	Encounter for aftercare following kidney transplant	Deconditioning, functional rehab
Z48.23	Encounter for aftercare following liver transplant	Deconditioning, functional rehab
Z48.24	Encounter for aftercare following lung transplant	Pulmonary rehab component
Z48.25	Encounter for aftercare following heart-lung transplant	Combined cardiac/pulmonary rehab
Z48.290	Encounter for aftercare following bone marrow transplant	Prolonged deconditioning
Z48.298	Encounter for aftercare following other organ transplant	Pancreas, intestine

Z48.3 — Aftercare Following Surgery for Neoplasm

Code	Description
Z48.3	Aftercare following surgery for neoplasm

Z48.8 — Aftercare Following Other Surgical Procedures

Code	Description	PM&R Relevance
Z48.810	Encounter for aftercare following surgery on the sense organs	Post-ENT/ophthalmology
Z48.811	Encounter for aftercare following surgery on the nervous system	Post-neurosurgery rehab
Z48.812	Encounter for aftercare following surgery on the circulatory system	Post-cardiac surgery rehab
Z48.89	Encounter for aftercare following other surgical procedures	General surgical aftercare

Coding pearls:

• Z48.811 is key for post-neurosurgery PM&R (e.g., post-craniotomy, post-spinal surgery rehab)
• Z48.812 drives many cardiac rehab IRF admissions following CABG, valve surgery, LVAD placement
• Always add the underlying condition as additional diagnosis (e.g., the heart disease, the neoplasm)
• Transplant aftercare codes (Z48.2-) require the transplant status code (Z94.-) as additional dx

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💊 Z51 — Encounter for Other Aftercare and Medical Care

Code	Description	PM&R Relevance
Z51.89	Encounter for other specified aftercare	Catch-all; used for rehab encounters not covered by Z47/Z48

Z51.89 Use in PM&R

Z51.89 is used when a patient is admitted for rehabilitation but no more specific aftercare code applies — for example, post-stroke rehab when the CVA is resolved and no Z47/Z48 code fits. Pair with personal history code (Z86.-) or the residual condition (e.g., hemiplegia G81.-) as additional diagnoses.

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🧍 Z74 — Problems Related to Care Provider Dependency

Z74 — Functional Status and Care Dependency

Z74 codes document the patient’s functional dependency level and care needs. These are valuable secondary codes in PM&R to capture the full clinical picture and support medical necessity.

Code	Description	Clinical Context
Z74.01	Bed confinement status	Completely non-ambulatory, bedbound
Z74.09	Other reduced mobility	Impaired but not bedbound; walker/wheelchair dependent
Z74.1	Need for assistance with personal care	ADL dependency — bathing, dressing, grooming
Z74.2	Need for assistance at home, no other household member able to render care	Caregiver unavailability — supports discharge planning
Z74.3	Need for continuous supervision	Cognitive/safety impairment requiring supervision
Z74.8	Other problems related to care provider dependency	Other specified dependency
Z74.9	Problem related to care provider dependency, unspecified	Avoid — use specific code

Coding pearls:

• Z74 codes are never PDX — always secondary
• Extremely useful for supporting IRF medical necessity documentation
• Z74.3 is valuable in TBI and stroke patients with cognitive impairment requiring supervision
• Pair Z74.01 with Z99.- device dependence codes when applicable (e.g., ventilator-dependent bedbound patient)

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📜 Z82 — Family History Relevant to PM&R

Z82 — Family History

Family history codes in PM&R are secondary codes that may support risk stratification, care planning, and documentation completeness.

Code	Description	PM&R Relevance
Z82.3	Family history of stroke	Risk factor; relevant in TBI/neuro rehab
Z82.49	Family history of ischemic heart disease and other diseases of the circulatory system	Cardiac rehab risk stratification
Z82.61	Family history of arthritis	Orthopedic rehab context
Z82.69	Family history of other musculoskeletal disorders	Osteoporosis, connective tissue disease

Z82 Usage Note

Z82 codes are rarely PDX and rarely drive DRG. Include them when documented and clinically relevant to the current encounter — particularly in cardiac and neuro rehab where family history affects care planning.

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📋 Z86 — Personal History Relevant to PM&R

Z86 — Personal History of Diseases

Personal history codes indicate a condition that no longer exists but may have bearing on current care. Critical distinction from active disease codes.

Code	Description	PM&R Relevance
Z86.00	Personal history of in-situ neoplasm	Post-oncology rehab
Z86.19	Personal history of other infectious and parasitic diseases	Post-COVID deconditioning rehab
Z86.39	Personal history of other endocrine, nutritional, and metabolic diseases	Diabetic neuropathy rehab history
Z86.69	Personal history of other diseases of the musculoskeletal system and connective tissue	Prior fracture, arthritis

Z86 vs. Active Condition

Use Z86 only when the condition is resolved. If the condition is active and affecting current care, use the active disease code. Example: patient with ongoing hemiplegia from a prior stroke uses G81.- (hemiplegia), not Z86.73 — because the hemiplegia is an active residual condition, not history.

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📁 Z87 — Personal History of Other Conditions

Z87 — Highly Relevant to PM&R Rehab Planning

Code	Description	PM&R Relevance
Z87.01	Personal history of pneumonia	Post-COVID/aspiration pneumonia rehab
Z87.02	Personal history of other diseases of the respiratory system	Pulmonary rehab history
Z87.09	Personal history of other diseases of the respiratory system	COPD exacerbation history
Z87.39	Personal history of other diseases of the musculoskeletal system	Prior fracture, joint disease
Z87.820	Personal history of traumatic fracture	Prior fracture relevant to current orthopedic rehab
Z87.821	Personal history of retained foreign body fully removed	Surgical hardware previously removed
Z87.828	Personal history of other musculoskeletal disorders	Prior soft tissue injury

Coding pearl — Stroke history:

• There is no Z87 code specifically for stroke
• Resolved stroke with no residual effects: Z86.73 — Personal history of transient ischemic attack (TIA) and cerebral infarction without residual deficits
• Stroke with residual deficits (hemiplegia, aphasia, dysphagia): code the active residual (G81.-, R47.01, R13.1-) — not a history code

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🦾 Z96 — Presence of Functional Implants

Z96 — Joint Prosthesis Status Codes

Z96 codes are status codes — they document that the patient currently has an implant in place. Always secondary. Critical companions to Z47.1 (joint replacement aftercare).

Joint Prosthesis Presence

Code	Description
Z96.641	Presence of right artificial hip joint
Z96.642	Presence of left artificial hip joint
Z96.643	Presence of artificial hip joint, bilateral
Z96.644	Presence of artificial hip joint, unspecified
Z96.651	Presence of right artificial knee joint
Z96.652	Presence of left artificial knee joint
Z96.653	Presence of artificial knee joint, bilateral
Z96.654	Presence of artificial knee joint, unspecified
Z96.661	Presence of right artificial ankle joint
Z96.662	Presence of left artificial ankle joint
Z96.663	Presence of artificial ankle joint, bilateral
Z96.664	Presence of artificial ankle joint, unspecified
Z96.691	Presence of other orthopedic joint implants, right shoulder
Z96.692	Presence of other orthopedic joint implants, left shoulder
Z96.693	Presence of other orthopedic joint implants, bilateral shoulder
Z96.694	Presence of other orthopedic joint implants, unspecified

Coding pearls:

• Always pair the appropriate Z96 code with Z47.1 in post-arthroplasty rehab admissions
• Bilateral replacements at same admission: use bilateral Z96 code (e.g., Z96.653)
• Staged bilateral (one side at a time): code the specific side operated
• Internal fixation device presence: Z96.691-Z96.699 or Z96.9 — distinguish from joint prosthesis

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🔌 Z99 — Dependence on Enabling Machines and Devices

Z99 — Device Dependence Status

Z99 codes are critical in complex PM&R patients — especially SCI, TBI, and post-ICU rehab where patients may be ventilator-dependent, trach-dependent, or wheelchair-dependent.

Code	Description	PM&R Context
Z99.11	Dependence on respirator (ventilator) status	Vent-dependent SCI, TBI, or post-ICU rehab
Z99.12	Encounter for respirator (ventilator) dependence during power failure	Specific acute scenario
Z99.3	Dependence on wheelchair	SCI, stroke with permanent mobility impairment
Z99.89	Dependence on other enabling machines and devices	Feeding tube dependence, CPAP, etc.

Coding pearls:

• [[Z99.11]] in an IRF/acute care setting significantly impacts DRG complexity — always capture if documented
• Z99.3 supports medical necessity for wheelchair-level mobility training in IRF
• Trach dependence: Z93.0 (tracheostomy status) — different category but frequently co-occurs with Z99.11 in PM&R
• Feeding tube: Z93.1 (gastrostomy status) — another status code that pairs with Z99.89

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🏥 Encounter Type Coding Guidance

Inpatient Rehab Facility (IRF) Admissions

IRF PDX Logic

IRF admissions are classified by reason for rehabilitation, not the original injury or surgery. The PDX must reflect why the patient needs the inpatient rehab level of care.

Clinical Scenario	PDX	Key Secondary Codes
Post-THR rehab	Z47.1	Z96.641 or Z96.642, Z74.09, Z87.39
Post-TKR rehab	Z47.1	Z96.651 or Z96.652, Z74.09
Post-stroke rehab (resolved CVA)	Z51.89 or Z86.73	G81.- (hemiplegia), R47.01 (aphasia if present), R13.- (dysphagia if present)
Post-hip fracture ORIF rehab	Z47.89	Z87.820, Z74.09, M81.- (osteoporosis if applicable)
Post-amputation rehab	Z47.81	Z89.- (amputation status), Z74.09
Post-spinal fusion rehab	Z47.82	M43.- (underlying condition), Z74.09
Post-cardiac surgery rehab	Z48.812	Underlying cardiac condition, Z74.09
Post-neurosurgery rehab	Z48.811	Underlying neurological condition

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Acute Care Rehab Consults

Acute Care Setting — Z Codes are Secondary

When PM&R is a consulting service in the acute care hospital, the admitting diagnosis drives the PDX. Z codes appear as secondary diagnoses to document rehab needs and functional status.

Clinical Scenario	PDX (Acute Care)	PM&R-Relevant Secondary Codes
Active CVA with PM&R consult	I63.-	Z74.09, Z74.3, Z74.1
Post-op day 2, PT/OT consult	Z48.- (surgical aftercare)	Z74.09, Z74.1
Acute SCI, PM&R consult	S14.- or S24.- or S34.-	Z74.01, Z99.11 if vented, Z99.3 if applicable
Acute TBI, PM&R consult	S06.-	Z74.3, Z74.01
Deconditioning workup, PM&R consult	R53.81 (deconditioning/fatigue)	Z74.09, Z74.1, underlying etiology

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Post-Surgical Rehabilitation

Post-Surgical Rehab — Z48 and Z47 Decision

Choose between Z47 and Z48 based on whether the surgery was orthopedic (Z47) or non-orthopedic (Z48).

Surgery Type	Correct Aftercare Code
Joint replacement	Z47.1
Fracture ORIF	Z47.89
Amputation	Z47.81
Spinal fusion for scoliosis	Z47.82
Cardiac surgery (CABG, valve)	Z48.812
Neurosurgery (craniotomy, laminectomy)	Z48.811
Organ transplant	Z48.21-Z48.298
Oncologic surgery	Z48.3
Other surgery	Z48.89

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Spinal Cord and TBI Rehabilitation

SCI and TBI Rehab — Complex Coding

These are among the most documentation-intensive PM&R encounters. Functional status, neurological level, and completeness of injury all drive coding specificity.

Spinal Cord Injury:

Code	Description
G82.20	Paraplegia, unspecified
G82.21	Paraplegia, complete
G82.22	Paraplegia, incomplete
G82.50	Quadriplegia, unspecified
G82.51	Quadriplegia, C1-C4, complete
G82.52	Quadriplegia, C1-C4, incomplete
G82.53	Quadriplegia, C5-C7, complete
G82.54	Quadriplegia, C5-C7, incomplete

SCI Coding Tip

Acute traumatic SCI in acute care: use S14/S24/S34 (injury codes). Chronic/established SCI in IRF: use G82.- (functional level). Always document ASIA Impairment Scale classification if available — maps to complete vs. incomplete.

TBI — Residual Conditions Commonly Coded in PM&R:

Code	Description
F07.30	Postconcussional syndrome, unspecified
F07.81	Postconcussional syndrome
G93.89	Other specified disorders of brain (post-TBI encephalopathy)
R41.3	Other amnesia (post-traumatic amnesia)
R41.89	Other specified symptoms involving cognition
G81.90	Hemiplegia, unspecified, affecting unspecified side
R13.10	Dysphagia, unspecified
R47.01	Aphasia
Z74.3	Need for continuous supervision (cognitive)

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🧾 CPT Code Reference — PM&R Therapeutic Services

CPT in the Inpatient Setting

In acute inpatient and IRF settings, PT/OT/SLP services are billed under the facility (UB-04), not individually under CPT by the therapist. However, knowing CPT codes is essential for profee billing (PM&R physician services), understanding RVUs, and coding education.

Therapeutic Procedures

CPT	Description	Time-Based
97110	Therapeutic exercises	Yes (15 min units)
97112	Neuromuscular reeducation	Yes
97116	Gait training	Yes
97129	Therapeutic intervention, cognitive function — initial 15 min	Yes
97130	Therapeutic intervention, cognitive function — each additional 15 min	Yes
97150	Therapeutic procedure, group (2+ patients)	No
97530	Therapeutic activities (dynamic activities)	Yes
97535	Self-care/home management training	Yes
97537	Community/work reintegration training	Yes
97542	Wheelchair management/propulsion training	Yes

Physical Therapy Evaluations

CPT	Description
97161	PT evaluation — low complexity
97162	PT evaluation — moderate complexity
97163	PT evaluation — high complexity
97164	PT re-evaluation

Occupational Therapy Evaluations

CPT	Description
97165	OT evaluation — low complexity
97166	OT evaluation — moderate complexity
97167	OT evaluation — high complexity
97168	OT re-evaluation

Speech-Language Pathology

CPT	Description	Notes
92507	Treatment of speech, language, voice, communication	Individual
92508	Treatment of speech, language, voice, communication	Group
92521	Evaluation of speech fluency	Stuttering
92522	Evaluation of speech sound production	Articulation
92523	Evaluation of speech sound production with language comprehension	Combined
92524	Behavioral and qualitative analysis of voice and resonance
97750	Physical performance test or measurement	Functional capacity
97755	Assistive technology assessment	AAC devices

Physical Agent Modalities

Modalities Require Concurrent Skilled Care

Modalities alone are not separately billable in most inpatient settings without concurrent skilled therapeutic intervention. Know your payer rules.

CPT	Description
97010	Hot or cold packs
97012	Mechanical traction
97014	Electrical stimulation (unattended)
97016	Vasopneumatic device
97018	Paraffin bath
97022	Whirlpool
97024	Diathermy
97026	Infrared
97028	Ultraviolet
97032	Electrical stimulation (attended)
97033	Iontophoresis
97034	Contrast baths
97035	Ultrasound
97036	Hubbard tank
97039	Unlisted modality

Neuromuscular and Functional Training

CPT	Description
97760	Orthotic management and training — initial encounter
97761	Prosthetic training — initial encounter
97763	Orthotic/prosthetic management — subsequent encounter
97545	Work hardening/conditioning — initial 2 hours
97546	Work hardening/conditioning — each additional hour

Behavior Analysis (ABA — Autism/Cognitive Rehab)

CPT	Description
97151	Behavior identification assessment
97152	Behavior identification — supporting assessment
97153	Adaptive behavior treatment by protocol
97154	Group adaptive behavior treatment by protocol
97155	Adaptive behavior treatment with protocol modification
97156	Family adaptive behavior treatment guidance
97157	Multiple-family group adaptive behavior treatment
97158	Group adaptive behavior treatment with protocol modification

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📊 MS-DRG Considerations — PM&R

DRGs Most Common in PM&R-Heavy Cases

MS-DRG	Title	Notes
945	Rehabilitation W CC/MCC	IRF-level rehab with CC or MCC
946	Rehabilitation W/O CC/MCC	IRF-level rehab, uncomplicated
559	Aftercare, Musculoskeletal System and Connective Tissue W MCC	Post-ortho surgical aftercare
560	Aftercare, Musculoskeletal System W CC	Post-ortho surgical aftercare
561	Aftercare, Musculoskeletal System W/O CC/MCC	Post-ortho surgical aftercare
563	Aftercare W/O CC/MCC	General aftercare
082	Traumatic Stupor and Coma, >1 Hr W MCC	Severe TBI
083	Traumatic Stupor and Coma, >1 Hr W CC	TBI with CC
101	Seizures W MCC	Post-TBI seizure
190	Chronic Obstructive Pulmonary Disease W MCC	Post-pulmonary rehab

CC/MCC Capture in PM&R

Common CCs and MCCs that elevate DRG in PM&R encounters:

• Acute blood loss anemia (D62) → CC
• Pressure ulcer Stage 3+ (L89.-) → MCC
• Malnutrition (E43, E44.-) → MCC/CC
• Respiratory failure (J96.0-) → MCC
• Sepsis (A41.-) → MCC
• hyponatremia (E87.1) → CC
• UTI (N39.0) → CC
• Dysphagia (R13.1-) → CC
• DVT (I82.-) → CC

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📌 Coding Scenarios — High-Yield Clinical Situations

Scenario 1: IRF Admission Post-Total Hip Replacement

• PDX: Z47.1 — Aftercare following joint replacement
• Secondary: Z96.641 — Presence of right artificial hip joint
• Secondary: Z74.09 — Reduced mobility
• Secondary: Z74.1 — Need for assistance with personal care
• Secondary: M16.11 — Unilateral primary osteoarthritis, right hip (underlying condition)
• DRG: 560 or 561 depending on CC/MCC

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Scenario 2: IRF Admission Post-Stroke, Hemiplegia, Aphasia, Dysphagia

• PDX: Z51.89 — Encounter for other specified aftercare (stroke resolved, rehab phase)
• Secondary: G81.92 — Hemiplegia, unspecified, affecting dominant side
• Secondary: R47.01 — Aphasia
• Secondary: R13.12 — Dysphagia, oropharyngeal phase
• Secondary: Z86.73 — Personal history of TIA/cerebral infarction without residual (if applicable)
• Secondary: Z74.3 — Need for continuous supervision
• DRG: 945 or 946

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Scenario 3: Acute Care Admission, SCI C5 Complete, PM&R Consult

• PDX: S14.105A — Unspecified injury at C5 level, initial encounter (acute SCI)
• Secondary: G82.51 — Quadriplegia, C1-C4 complete (or appropriate level)
• Secondary: Z99.11 — Ventilator dependence (if applicable)
• Secondary: Z74.01 — Bed confinement
• Secondary: Z74.1 — Need for assistance with personal care
• DRG: Driven by SCI injury code + MCC/CC

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Scenario 4: Post-Amputation IRF Admission, Prosthetic Training

• PDX: Z47.81 — Orthopedic aftercare following surgical amputation
• Secondary: Z89.512 — Acquired absence of left leg below knee
• Secondary: Z74.09 — Reduced mobility
• CPT (profee): 97761 — Prosthetic training
• DRG: 560 or 561

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Scenario 5: Post-CABG Cardiac Rehab IRF Admission

• PDX: Z48.812 — Aftercare following surgery on the circulatory system
• Secondary: I25.10 — Atherosclerotic heart disease, native coronary artery
• Secondary: Z95.1 — Presence of aortocoronary bypass graft
• Secondary: Z74.09 — Reduced mobility
• DRG: 945 or 946

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Scenario 6: TBI Rehab, Cognitive Impairment, Supervision Needed

• PDX: Z48.811 — Aftercare following surgery on the nervous system (if post-neurosurgery) OR S06.- if still acute
• Secondary: F07.81 — Postconcussional syndrome
• Secondary: R41.89 — Other cognitive symptoms
• Secondary: Z74.3 — Need for continuous supervision
• CPT (profee): 97129 + 97130 — Cognitive therapeutic intervention
• DRG: 945 or 946

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❓ Common Queries for PM&R Encounters

CDI Queries — PM&R Z Code Situations

• “The patient was admitted for inpatient rehabilitation following total knee replacement. Can you confirm the patient is no longer in the acute post-operative phase and is admitted solely for rehabilitation purposes?”
• “Documentation reflects hemiplegia and aphasia following a prior stroke. Can you confirm whether the cerebral infarction is resolved with residual deficits, or whether the CVA is still considered active?”
• “The patient is noted to require supervision for all activities due to cognitive impairment. Can you document the specific cognitive deficits (memory, executive function, orientation) and confirm the level of supervision required?”
• “The patient is wheelchair-dependent. Can you document whether this is a permanent functional status or an expected temporary limitation?”
• “Documentation references deconditioning. Can you identify and document the underlying etiology of the deconditioning (e.g., prolonged hospitalization, post-COVID, malnutrition, cardiac disease)?”
• “The patient has a history of stroke. Can you clarify whether there are any residual neurological deficits from the prior stroke that are affecting this admission?”
• “Malnutrition is suspected given the patient’s weight loss and albumin level. Can you confirm presence and severity of malnutrition (mild, moderate, severe)?”

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🔍 Related Notes (Link When Built)

• PM&R DRG Reference — 945 and 946
• Spinal Cord Injury Coding — G82 and S-Codes
• TBI Coding Reference — S06 and Residuals
• Stroke Residuals Coding — G81, R47, R13
• Z89 Amputation Status Codes
• Z93 Artificial Opening Status Codes
• Z94 Transplant Status Codes
• CC MCC Table — PM&R
• Facial Fractures — Otolaryngology Inpatient Coding Reference

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Sources: ICD-10-CM FY2026 Official Guidelines; CMS MS-DRG Grouper v41; CMS IRF PPS Classification; AMA CPT 2026; AAPC CIC Study Resources.^1,2,3,4