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Z89.439
ICD-10-CM
Transmetatarsal Amputation

Find comprehensive information on Transmetatarsal Amputation including clinical documentation, ICD-10 codes (84.13, 84.19), CPT codes for partial foot amputation (28800, 28805, 28810), postoperative care, and healthcare guidelines. Learn about diagnosis, treatment, and coding for Transmetatarsal Amputation procedures. This resource provides essential information for healthcare professionals, medical coders, and clinicians involved in the management of this condition.

Also known as

TMA
Partial Foot Amputation

Diagnosis Snapshot

Key Facts
  • Definition : Surgical removal of part of the foot at the metatarsals.
  • Clinical Signs : Gangrene, infection, severe deformity, non-healing ulcers, trauma.
  • Common Settings : Hospitals, outpatient surgical centers, wound care clinics.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC Z89.439 Coding
L08.3-

Other local infections of skin

Includes amputation complications like infections.

S98.-

Other injuries of lower leg

Includes traumatic amputations of the foot.

Z89.41-

Acquired absence of foot and toes

Codes for the aftereffects of a transmetatarsal amputation.

E10-E14

Diabetes mellitus

Often the underlying cause for transmetatarsal amputation.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the amputation traumatic?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Transmetatarsal Amputation
Partial Toe Amputation
Lisfranc Amputation

Documentation Best Practices

Documentation Checklist
  • Transmetatarsal amputation ICD-10 code, confirm laterality
  • Specific reason for amputation (e.g., ischemia, gangrene)
  • Pre-operative vascular assessment documented
  • Level of bone resection specified (e.g., metatarsals 1-3)
  • Post-operative wound description and healing plan

Coding and Audit Risks

Common Risks
  • Laterality Coding

    Missing or incorrect laterality (right, left, bilateral) for the amputation can lead to claim denials or inaccurate reimbursement.

  • Partial vs. Complete

    Coding must distinguish between partial and complete transmetatarsal amputation. Inaccurate documentation can lead to coding errors impacting reimbursement.

  • Complication Coding

    Associated complications (e.g., infection, osteomyelitis) must be documented and coded separately to reflect the full severity of the case.

Mitigation Tips

Best Practices
  • Accurate ICD-10 coding (Z89.4- for acquired absence) for proper reimbursement.
  • Detailed documentation of amputation level, etiology, and complications for improved CDI.
  • Timely post-op care planning for phantom limb pain and infection prevention ensures compliance.
  • Thorough patient education on wound care, mobility aids, and prosthesis options promotes healing.
  • Regular follow-up assessments with multidisciplinary team optimize functional outcomes and prevent complications.

Clinical Decision Support

Checklist
  • Verify presence of irreversible ischemia/gangrene forefoot
  • Document failed conservative treatments
  • Confirm adequate proximal blood supply for healing
  • Assess patient's functional status/rehab potential
  • Evaluate/document surgical risks/benefits/alternatives

Reimbursement and Quality Metrics

Impact Summary
  • Transmetatarsal Amputation reimbursement hinges on accurate ICD-10 (e.g., Z89.11, S09.81-) and CPT coding (e.g., 28805, 28820) impacting DRG assignment and payment.
  • Coding quality affects transmetatarsal amputation claims processing, denials, and revenue cycle management. Proper documentation is crucial.
  • Hospital quality reporting for transmetatarsal amputation includes surgical site infection (SSI) rates, impacting public ratings and value-based payments.
  • Length of stay (LOS), readmission rates, and post-operative complications influence transmetatarsal amputation reimbursement and quality scores.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code specific metatarsals
  • ICD-10 Z89.4 history
  • Document amputation level
  • CPT 28805-28810
  • Check laterality codes

Documentation Templates

Patient presents with indication for transmetatarsal amputation due to [specify underlying cause, e.g., diabetic foot ulcer, peripheral artery disease, gangrene, trauma, infection].  Physical examination reveals [describe findings, e.g.,  extent of tissue necrosis, presence of infection, palpable pulses, sensory deficits].  Diagnostic studies, including [list studies, e.g.,  X-ray, MRI, arteriogram, wound cultures], confirm the diagnosis and demonstrate [specific findings, e.g., osteomyelitis, absent blood flow, extent of soft tissue involvement].  Conservative treatments, such as [list treatments, e.g.,  debridement, wound care, antibiotics, vascular interventions], were attempted but proved unsuccessful in halting the progression of [specify condition, e.g.,  infection, necrosis].  After a thorough discussion of risks and benefits, including the possibility of revision surgery, the patient consented to transmetatarsal amputation.  Procedure will be performed at the [specify level, e.g.,  Lisfranc, Chopart] joint.  Postoperative plan includes [detail plan, e.g.,  pain management, wound care, physical therapy, prosthetic fitting].  Patient education provided on postoperative care, potential complications such as phantom limb pain, infection, delayed healing, and the importance of follow-up appointments.  ICD-10 code [specify code, e.g.,  Z42.8, depending on reason for amputation] and CPT code [specify code, e.g.,  22850-22855, depending on specific procedure] will be used for billing and coding purposes. This transmetatarsal amputation procedure is deemed medically necessary to prevent further complications and improve the patient's quality of life.