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Home/Diagnosis/ICD-10 Coding for Posterior Tibial Tendinitis

ICD-10 Coding for Posterior Tibial Tendinitis

M76.821
M76.822
M76.829

Complete ICD-10-CM coding and documentation guide for icd-10 coding for posterior tibial tendinitis includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
PTTD
Posterior Tibial Tendon Dysfunction
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Key Information: ICD-10 Coding for Posterior Tibial Tendinitis

Essential facts and insights about ICD-10 Coding for Posterior Tibial Tendinitis

Use ICD-10 code M76.821 for other enthesopathy of right foot, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Other enthesopathy of right foot

Billable Code
M76.821
Billable

Diagnostic Criteria

  • • Pain and swelling along the medial ankle
  • • Positive single-leg heel raise test
  • • Ultrasound or MRI confirming tendinitis

Applicable To

  • • Right posterior tibial tendinitis

Important Notes

  • • Ensure laterality is documented; avoid using unspecified codes unless necessary.

Other enthesopathy of left foot

Billable Code
M76.822
Billable

Diagnostic Criteria

  • • Tenderness distal to medial malleolus
  • • MRI showing tendon thickening
  • • Inability to perform single-leg heel raise

Applicable To

  • • Left posterior tibial tendinitis

Important Notes

  • • Document the stage of tendinitis if applicable.

Other enthesopathy of unspecified foot

Billable Code
M76.829
Billable

Diagnostic Criteria

  • • Generalized pain without specific laterality
  • • Imaging not specifying laterality

Applicable To

  • • Unspecified laterality for posterior tibial tendinitis

Important Notes

  • • Avoid using this code if laterality can be determined.

Spontaneous rupture of other tendons, ankle and foot

Non-Billable
M66.37
Non-Billable

Diagnostic Criteria

  • • MRI showing tendon discontinuity
  • • Surgical confirmation of rupture

Applicable To

  • • Rupture of posterior tibial tendon

Important Notes

  • • Ensure rupture is confirmed through imaging or surgery.
Ancillary Codes

Additional codes that may be used with this diagnosis

M21.41

Flat foot [pes planus], right foot

Use when there is an associated acquired flatfoot deformity.

M21.42

Flat foot [pes planus], left foot

Use when there is an associated acquired flatfoot deformity.

Frequently Asked Questions

What is the ICD-10 code for posterior tibial tendinitis?

The ICD-10 code for posterior tibial tendinitis is M76.82-, with specific codes for right (M76.821), left (M76.822), and unspecified (M76.829) foot involvement.

How is posterior tibial tendinitis documented?

Documentation should include laterality, imaging findings, and functional limitations such as inability to perform a single-leg heel raise.

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