1. ICD-10-CM Codes
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2. Q00-Q99
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3. Q65-Q79
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4. Q77-
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5. 2023 ICD-10-CM Diagnosis Code Q77.1

2023 ICD-10-CM Diagnosis Code Q77.1

Thanatophoric short stature

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

• Q77.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2023 edition of ICD-10-CM Q77.1 became effective on October 1, 2022.
• This is the American ICD-10-CM version of Q77.1 - other international versions of ICD-10 Q77.1 may differ.

• Thanatophoric dysplasia

• A severe autosomal dominant inherited disorder caused by mutations in the fgfr3 gene. It is characterized by multiple skeletal abnormalities, including extremely short limbs. It results in the death of the neonate.
• A severe form of neonatal dwarfism with very short limbs. All cases have died at birth or later in the neonatal period.
• A severe skeletal dysplasia characterized chiefly by rhizomelic shortness of the limbs with skin redundancy, narrow chest with flattened vertebral bodies, a short pelvis, and disproportionately large head with frontal bossing and cloverleaf skull, prominent eyes, hypertelorism, and depressed nasal bridge. The condition is usually lethal at birth (hence the term thanatophoric meaning "death bearing," in greek) but some patients may survive into the childhood. Those who survive are severely retarded and suffer from respiratory insufficiency due to reduced chest circumference and/or lower brain stem compression caused by a small foramen magnum and a variety of central nervous system and other abnormalities. Two basic types are recognized: type i (td1) with curved femora and flat vertebral bodies. Type ii (td2) with straight femora, taller vertebral bodies, and cloverleaf skull.
• A severe skeletal dysplasia characterized chiefly by rhizomelic shortness of the limbs with skin redundancy, narrow chest with flattened vertebral bodies, a short pelvis, and disproportionately large head with frontal bossing and cloverleaf skull, prominent eyes, hypertelorism, and depressed nasal bridge. The condition is usually lethal at birth (hence the term thanatophoric meaning "death bearing," in greek) but some patients may survive into the childhood. Those who survive are severely retarded and suffer from respiratory insufficiency due to reduced chest circumference and/or lower brain stem compression caused by a small foramen magnum and a variety of central nervous system and other abnormalities. Two basic types are recognized: type i (td1) with curved femora and flat vertebral bodies. Type ii (td2) with straight femora, taller vertebral bodies, \ and cloverleaf skull.

• Q77.1 is considered exempt from POA reporting.

• 564 Other musculoskeletal system and connective tissue diagnoses with mcc
• 565 Other musculoskeletal system and connective tissue diagnoses with cc
• 566 Other musculoskeletal system and connective tissue diagnoses without cc/mcc

Convert Q77.1 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

• Dwarfism E34.328
  - see also Stature, short
  ICD-10-CM Diagnosis Code E34.328

  Other genetic causes of short stature

  2023 - New Code Billable/Specific Code

  Applicable To

  • Short stature due to ACAN gene variant
  • Short stature due to aggrecan deficiency
  • Short stature due to NPR-2 gene variant
  • thanatophoric Q77.1
• Thanatophoric dwarfism or short stature Q77.1

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.