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v1.0.0
ICD-10 Guide
ICD-10 CodesQ77.1

Q77.1

Billable

Thanatophoric short stature

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 Q77.1 is a billable code used to indicate a diagnosis of thanatophoric short stature.

Key Diagnostic Point:

Thanatophoric short stature is a severe skeletal dysplasia characterized by disproportionately short stature and a range of skeletal abnormalities. This condition is caused by mutations in the FGFR3 gene, which plays a crucial role in bone growth and development. Clinically, patients present with features such as short limbs, a narrow thorax, and a disproportionately large head. Other associated anomalies may include clubfoot, hip dysplasia, and limb reduction defects. The condition is often diagnosed through prenatal imaging or at birth, and it is associated with a high mortality rate due to respiratory complications. Management focuses on supportive care and addressing specific skeletal deformities, but the prognosis remains poor, with many affected individuals not surviving past infancy. Understanding the complexities of this condition is essential for accurate coding and appropriate clinical management.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variability in clinical presentation and severity of symptoms
  • Need for genetic testing and interpretation of results
  • Differentiation from other skeletal dysplasias
  • Potential for associated congenital anomalies

Audit Risk Factors

  • Inadequate documentation of genetic testing results
  • Failure to capture associated congenital anomalies
  • Misclassification of severity or type of skeletal dysplasia
  • Lack of clarity in multidisciplinary care documentation

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed growth charts, physical examination findings, and imaging results are essential for accurate coding.

Common Clinical Scenarios

Management of infants with thanatophoric short stature in NICU, including respiratory support and orthopedic interventions.

Billing Considerations

Pediatric coders must be aware of the potential for rapid changes in clinical status and the need for ongoing documentation.

Genetics

Documentation Requirements

Genetic counseling notes, family history, and results of genetic tests are critical for accurate coding.

Common Clinical Scenarios

Counseling families about the implications of a diagnosis of thanatophoric short stature and discussing recurrence risks.

Billing Considerations

Genetic coders should ensure that all relevant genetic information is captured to support the diagnosis.

Coding Guidelines

Inclusion Criteria

Use Q77.1 When
  • Follow ICD
  • CM guidelines for congenital malformations, ensuring accurate documentation of associated conditions and genetic testing results

Exclusion Criteria

Do NOT use Q77.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99214CPT Code

Established patient office visit, level 4

Clinical Scenario

Used for follow-up visits in patients with thanatophoric short stature.

Documentation Requirements

Document the patient's growth, development, and any new concerns.

Specialty Considerations

Pediatricians should ensure comprehensive assessments are documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of diagnoses and facilitating better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of diagnoses and facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of diagnoses and facilitating better patient management.

Resources

Clinical References

  • •
    American Academy of Pediatrics

Coding & Billing References

  • •
    American Academy of Pediatrics

Frequently Asked Questions

What are the common associated conditions with thanatophoric short stature?

Common associated conditions include clubfoot, hip dysplasia, and limb reduction defects. Accurate documentation of these conditions is essential for proper coding and management.