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Home/Diagnosis/ICD-10 Coding for Myotonic Dystrophy

ICD-10 Coding for Myotonic Dystrophy

G71.11
G71.19

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

Also Known as:
DM1
DM2
Steinert's Disease
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Key Information: ICD-10 Coding for Myotonic Dystrophy

Essential facts and insights about ICD-10 Coding for Myotonic Dystrophy

Use ICD-10 code G71.11 for myotonic muscular dystrophy, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Myotonic muscular dystrophy

Billable Code
G71.11
Billable

Diagnostic Criteria

clinical:
  • • Presence of CTG repeat expansion in DMPK gene
documentation:
  • • Detailed documentation of clinical manifestations and genetic testing

Applicable To

  • • Myotonic dystrophy type 1 (DM1)

Important Notes

  • • Ensure genetic testing results are documented to support the use of this code.

Other myotonic disorders

Billable Code
G71.19
Billable

Diagnostic Criteria

clinical:
  • • Confirmed CNBP CCTG repeat expansion
  • • Proximal muscle weakness without severe congenital forms

Applicable To

  • • Myotonic dystrophy type 2 (DM2)

Important Notes

  • • Ensure differentiation between DM1 and DM2 is clearly documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

M62.40

Muscle contracture, unspecified

Use to specify muscle contractures associated with myotonic dystrophy.

M24.50

Contracture of joint, unspecified

Use to specify joint contractures associated with myotonic dystrophy.

Frequently Asked Questions

What is the ICD-10 code for myotonic dystrophy?

The ICD-10 code for myotonic dystrophy type 1 is G71.11, while type 2 is coded as G71.19. Ensure genetic testing confirms the specific type.

How do you differentiate between DM1 and DM2 in coding?

DM1 is confirmed by CTG repeat expansion in the DMPK gene, while DM2 is confirmed by CCTG repeat expansion in the CNBP gene.

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