M70-M79
Other soft tissue disorders, not elsewhere classified

M76.61

Billabel:
Yes
No

M76.61 - Achilles tendinitis, right leg (ICD-10)

ICD-10 code M76.61 - Achilles tendinitis, right leg. Classified under Other soft tissue disorders, not elsewhere classified, this condition involves clinical findings relevant to diagnosis and documentation accuracy.

Overview

Achilles tendinitis right leg under ICD-10 code M76.61 represents a musculoskeletal condition that may impact functional mobility pain perception and overall quality of life.

  • Document acuity (acute, subacute, chronic).
  • Include anatomic region/level and laterality.
  • Correlate symptoms with exam and imaging when used.
  • Avoid unspecified codes when details exist in the note.
  • Verify payer policy/LCD before procedures.
  • Ensure medical necessity is explicit.

Comman symptoms

  • Localized tendon pain with loading
  • Focal tenderness at insertion
  • Morning stiffness improves with gentle activity

Red Flag

  • Severe or progressive neurologic deficit
  • Fever unexplained weight loss night sweats
  • History of cancer immunosuppression or IV drug use
  • Trauma with suspected fracture
  • Bowel/bladder dysfunction or saddle anesthesia

At a Glance

  • ICD-10 code: M76.61
  • Condition: Achilles tendinitis, right leg
  • Category: Tendinopathy & Enthesopathy
  • Related ICD-10 codes: M77.10-M77.12, M77.00-M77.02, M76.60-M76.62
  • Common CPT links: 99202-99215, 20550 (tendon sheath), 97110, 97112
  • Use the most specific laterality/region code your note supports.

Overview

Achilles tendinitis right leg under ICD-10 code M76.61 represents a musculoskeletal condition that may impact functional mobility pain perception and overall quality of life.

  • Document acuity (acute, subacute, chronic).
  • Include anatomic region/level and laterality.
  • Correlate symptoms with exam and imaging when used.
  • Avoid unspecified codes when details exist in the note.
  • Verify payer policy/LCD before procedures.
  • Ensure medical necessity is explicit.

Causes & Risk Factors

Achilles tendinitis, right leg (M76.61) can arise from a combination of biomechanical stress, degenerative processes, systemic inflammation, or trauma. Common risk factors include aging, occupational strain, obesity, and genetic predisposition. Lifestyle factors such as poor posture, repetitive movement, or low physical conditioning also contribute to chronic musculoskeletal pain.

Diagnostic Workup

Accurate coding of Achilles tendinitis, right leg requires clear diagnostic workup. Clinicians often rely on physical examination findings such as range of motion limits, palpation tenderness, or neurovascular testing. Imaging-X-ray, MRI, or ultrasound-may confirm degenerative, inflammatory, or structural changes. Laboratory tests are typically ordered if autoimmune or metabolic causes are suspected.

Treatment & Rehabilitation

While this resource focuses on ICD-10 coding, understanding general management helps coders interpret documentation. Treatment for Achilles tendinitis, right leg may include physical therapy, posture correction, ergonomic modifications, or supervised exercise programs. Pharmacologic therapy and procedural interventions should be captured through appropriate CPT and HCPCS codes when documented. Rehabilitation aims to restore strength, range of motion, and prevent recurrence.

Prevention

Preventing recurrent musculoskeletal issues requires a holistic approach-educating patients on stretching routines, core strengthening, and activity modification. For clinicians, structured documentation templates and s can ensure accurate, defensible coding for audit readiness.

Coding Examples

  • Example 1: Patient with achilles tendinitis right leg and documented left-sided involvement - code M76.61-L.
  • Example 2: Chronic pain after prior injury with imaging-confirmed degeneration - use M76.61 with chronicity modifier where applicable.
  • Example 3: Bilateral presentation with limited range of motion - choose most specific laterality code variants.

Audit & Compliance

Ensure ICD-10 coding aligns with payer policies and medical necessity. Redundant use of unspecified codes is a common audit trigger. For complex cases, link diagnosis codes to procedure CPTs in the superbill and verify that documentation supports frequency and modality of care.

Clinical Example

Chief Complaint: Patient presents with achilles tendinitis right leg over the past several weeks reporting intermittent pain and reduced function.

Subjective: The patient describes symptoms as dull aching and aggravated by movement or prolonged posture. Pain score rated 6/10 relieved partially by rest or heat.

Objective: Physical examination reveals localized tenderness reduced range of motion and no neurological deficit. Imaging reviewed indicates findings consistent with achilles tendinitis right leg (M76.61).

Assessment: Achilles tendinitis

right leg (M76.61) - consistent with tendinopathy & enthesopathy.

Plan: Continue conservative management monitor progression and re-evaluate in 4-6 weeks. Documentation supports ICD-10 code usage as primary diagnosis.

Differential Diagnoses

When coding achilles tendinitis, right leg, consider alternative or coexisting conditions that may share similar symptoms. Accurate differentiation ensures correct ICD-10 assignment and proper claim justification.

  • Strain
  • Sprain
  • Tendinitis
  • Osteoarthritis
  • Soft-tissue injury

Documentation Best Practices

  • Document acuity (acute subacute chronic) and laterality when available.
  • Capture specific region/level (e.g. cervical vs lumbar; right vs left; primary vs secondary OA).
  • Link symptoms to exam and imaging findings when relevant; avoid unsupported specificity.
  • Use the most specific code supported by the note; avoid unspecified when details exist.
  • Check payer policy and NCD/LCD rules; include conservative care attempts if required.

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What does ICD‑10 M76.61 — Achilles tendinitis, right leg mean, and when is it appropriate to use?
When should I avoid unspecified variants of ICD‑10 M76.61 and select a more specific sub‑code?
Which related ICD‑10 or CPT concepts are commonly paired with ICD‑10 M76.61 in claims?
What documentation is required to code ICD‑10 M76.61 (Achilles tendinitis, right leg) accurately for medical necessity?
What common denial risks apply to ICD‑10 M76.61, and how can I prevent them with better notes?