Q70-Q74
Medium Complexity

Congenital malformations of the urinary system

Primary Specialty: Urology
Last Updated: 2025-09-10

ICD-10 Codes (120)

117 billable
0 category headers
Q71
Reduction defects of upper limb
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Q71.0
Billable
Congenital complete absence of upper limb
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Q71.00
Billable
Congenital complete absence of unspecified upper limb
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Q71.01
Billable
Congenital complete absence of right upper limb
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Q71.02
Billable
Congenital complete absence of left upper limb
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Q71.03
Billable
Congenital complete absence of upper limb, bilateral
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Q71.1
Billable
Congenital absence of upper arm and forearm with hand present
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Q71.10
Billable
Congenital absence of unspecified upper arm and forearm with hand present
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Q71.11
Billable
Congenital absence of right upper arm and forearm with hand present
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Q71.12
Billable
Congenital absence of left upper arm and forearm with hand present
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Q71.13
Billable
Congenital absence of upper arm and forearm with hand present, bilateral
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Q71.2
Billable
Congenital absence of both forearm and hand
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Q71.20
Billable
Congenital absence of both forearm and hand, unspecified upper limb
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Q71.21
Billable
Congenital absence of both forearm and hand, right upper limb
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Q71.22
Billable
Congenital absence of both forearm and hand, left upper limb
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Q71.23
Billable
Congenital absence of both forearm and hand, bilateral
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Q71.3
Billable
Congenital absence of hand and finger
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Q71.30
Billable
Congenital absence of unspecified hand and finger
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Q71.31
Billable
Congenital absence of right hand and finger
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Q71.32
Billable
Congenital absence of left hand and finger
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Q71.33
Billable
Congenital absence of hand and finger, bilateral
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Q71.4
Billable
Longitudinal reduction defect of radius
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Q71.40
Billable
Longitudinal reduction defect of unspecified radius
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Q71.41
Billable
Longitudinal reduction defect of right radius
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Q71.42
Billable
Longitudinal reduction defect of left radius
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Q71.43
Billable
Longitudinal reduction defect of radius, bilateral
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Q71.5
Billable
Longitudinal reduction defect of ulna
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Q71.50
Billable
Longitudinal reduction defect of unspecified ulna
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Q71.51
Billable
Longitudinal reduction defect of right ulna
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Q71.52
Billable
Longitudinal reduction defect of left ulna
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Q71.53
Billable
Longitudinal reduction defect of ulna, bilateral
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Q71.6
Billable
Lobster-claw hand
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Q71.60
Billable
Lobster-claw hand, unspecified hand
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Q71.61
Billable
Lobster-claw right hand
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Q71.62
Billable
Lobster-claw left hand
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Q71.63
Billable
Lobster-claw hand, bilateral
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Q71.8
Billable
Other reduction defects of upper limb
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Q71.81
Billable
Congenital shortening of upper limb
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Q71.811
Billable
Congenital shortening of right upper limb
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Q71.812
Billable
Congenital shortening of left upper limb
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Q71.813
Billable
Congenital shortening of upper limb, bilateral
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Q71.819
Billable
Congenital shortening of unspecified upper limb
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Q71.89
Billable
Other reduction defects of upper limb
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Q71.891
Billable
Other reduction defects of right upper limb
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Q71.892
Billable
Other reduction defects of left upper limb
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Q71.893
Billable
Other reduction defects of upper limb, bilateral
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Q71.899
Billable
Other reduction defects of unspecified upper limb
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Q71.9
Billable
Unspecified reduction defect of upper limb
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Q71.90
Billable
Unspecified reduction defect of unspecified upper limb
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Q71.91
Billable
Unspecified reduction defect of right upper limb
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Q71.92
Billable
Unspecified reduction defect of left upper limb
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Q71.93
Billable
Unspecified reduction defect of upper limb, bilateral
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Q72
Reduction defects of lower limb
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Q72.0
Billable
Congenital complete absence of lower limb
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Q72.00
Billable
Congenital complete absence of unspecified lower limb
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Q72.01
Billable
Congenital complete absence of right lower limb
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Q72.02
Billable
Congenital complete absence of left lower limb
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Q72.03
Billable
Congenital complete absence of lower limb, bilateral
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Q72.1
Billable
Congenital absence of thigh and lower leg with foot present
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Q72.10
Billable
Congenital absence of unspecified thigh and lower leg with foot present
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Q72.11
Billable
Congenital absence of right thigh and lower leg with foot present
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Q72.12
Billable
Congenital absence of left thigh and lower leg with foot present
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Q72.13
Billable
Congenital absence of thigh and lower leg with foot present, bilateral
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Q72.2
Billable
Congenital absence of both lower leg and foot
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Q72.20
Billable
Congenital absence of both lower leg and foot, unspecified lower limb
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Q72.21
Billable
Congenital absence of both lower leg and foot, right lower limb
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Q72.22
Billable
Congenital absence of both lower leg and foot, left lower limb
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Q72.23
Billable
Congenital absence of both lower leg and foot, bilateral
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Q72.3
Billable
Congenital absence of foot and toe(s)
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Q72.30
Billable
Congenital absence of unspecified foot and toe(s)
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Q72.31
Billable
Congenital absence of right foot and toe(s)
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Q72.32
Billable
Congenital absence of left foot and toe(s)
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Q72.33
Billable
Congenital absence of foot and toe(s), bilateral
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Q72.4
Billable
Longitudinal reduction defect of femur
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Q72.40
Billable
Longitudinal reduction defect of unspecified femur
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Q72.41
Billable
Longitudinal reduction defect of right femur
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Q72.42
Billable
Longitudinal reduction defect of left femur
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Q72.43
Billable
Longitudinal reduction defect of femur, bilateral
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Q72.5
Billable
Longitudinal reduction defect of tibia
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Q72.50
Billable
Longitudinal reduction defect of unspecified tibia
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Q72.51
Billable
Longitudinal reduction defect of right tibia
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Q72.52
Billable
Longitudinal reduction defect of left tibia
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Q72.53
Billable
Longitudinal reduction defect of tibia, bilateral
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Q72.6
Billable
Longitudinal reduction defect of fibula
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Q72.60
Billable
Longitudinal reduction defect of unspecified fibula
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Q72.61
Billable
Longitudinal reduction defect of right fibula
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Q72.62
Billable
Longitudinal reduction defect of left fibula
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Q72.63
Billable
Longitudinal reduction defect of fibula, bilateral
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Q72.7
Billable
Split foot
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Q72.70
Billable
Split foot, unspecified lower limb
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Q72.71
Billable
Split foot, right lower limb
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Q72.72
Billable
Split foot, left lower limb
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Q72.73
Billable
Split foot, bilateral
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Q72.8
Billable
Other reduction defects of lower limb
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Q72.81
Billable
Congenital shortening of lower limb
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Q72.811
Billable
Congenital shortening of right lower limb
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Q72.812
Billable
Congenital shortening of left lower limb
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Q72.813
Billable
Congenital shortening of lower limb, bilateral
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Q72.819
Billable
Congenital shortening of unspecified lower limb
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Q72.89
Billable
Other reduction defects of lower limb
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Q72.891
Billable
Other reduction defects of right lower limb
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Q72.892
Billable
Other reduction defects of left lower limb
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Q72.893
Billable
Other reduction defects of lower limb, bilateral
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Q72.899
Billable
Other reduction defects of unspecified lower limb
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Q72.9
Billable
Unspecified reduction defect of lower limb
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Q72.90
Billable
Unspecified reduction defect of unspecified lower limb
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Q72.91
Billable
Unspecified reduction defect of right lower limb
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Q72.92
Billable
Unspecified reduction defect of left lower limb
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Q72.93
Billable
Unspecified reduction defect of lower limb, bilateral
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Q73
Reduction defects of unspecified limb
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Q73.0
Billable
Congenital absence of unspecified limb(s)
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Q73.1
Billable
Phocomelia, unspecified limb(s)
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Q73.8
Billable
Other reduction defects of unspecified limb(s)
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Q74
Billable
Other congenital malformations of limb(s)
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Q74.0
Billable
Other congenital malformations of upper limb(s), including shoulder girdle
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Q74.1
Billable
Congenital malformation of knee
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Q74.2
Billable
Other congenital malformations of lower limb(s), including pelvic girdle
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Q74.3
Billable
Arthrogryposis multiplex congenita
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Q74.8
Billable
Other specified congenital malformations of limb(s)
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Q74.9
Billable
Unspecified congenital malformation of limb(s)
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Updates & Changes

FY 2026 Updates

Current Year

New Codes (1)

Q23.4
Hypoplastic left heart syndrome with mitral atresia

Revised Codes (1)

Q21.0
Ventricular septal defect - updated to include hemodynamic significance when known

Deleted Codes

No codes deleted in this range for FY 2026

Historical Changes

  • •FY 2025: Routine maintenance updates with minor terminology clarifications
  • •FY 2024: Enhanced specificity requirements for certain code ranges
  • •FY 2023: Updated documentation guidelines for improved clarity

Upcoming Changes

  • •Proposed updates pending review by Coordination and Maintenance Committee
  • •Under consideration: Enhanced digital health integration codes

Implementation Guidance

  • •Review all FY 2026 updates for Q70-Q74 codes before implementation
  • •Always verify the most current codes in the ICD-10-CM manual
  • •Ensure clinical documentation supports the selected diagnosis codes
  • +3 more guidance items...

Range Overview

high priority

The ICD-10 code range Q70-Q74 is dedicated to congenital malformations of the urinary system. These codes are used to document conditions such as renal agenesis, cystic kidney disease, and other congenital anomalies of the kidney and urinary tract. The codes provide a detailed classification system for these conditions, allowing for accurate tracking, treatment, and research.

Key Usage Points:

  • •Always verify the patient's medical record for precise documentation of the congenital malformation.
  • •Use additional code(s) from category Z87.7 for personal history of congenital malformations.
  • •For newborns, consider using codes from the P00-P04 range to indicate the condition's impact on the newborn.
  • •Always code for all documented conditions that coexist at the time of the encounter.
  • •Remember to use a secondary code from Chapter 16 if the condition has originated in the perinatal period.

Coding Guidelines

When to Use:

  • ✓When a patient presents with a congenital malformation of the urinary system identified through diagnostic imaging.
  • ✓When a patient is being treated for complications arising from a congenital malformation of the urinary system.
  • ✓When a patient's medical history includes a congenital malformation of the urinary system that affects their current health status.
  • ✓When a newborn is diagnosed with a congenital malformation of the urinary system.

When NOT to Use:

  • ✗When the patient's condition is acquired, not congenital.
  • ✗When the patient's condition is not related to the urinary system.
  • ✗When the malformation has been corrected and no longer affects the patient's health status.
  • ✗When the condition is suspected but not confirmed.

Code Exclusions

Always cross-verify the patient's medical record to ensure that the condition is congenital and not acquired.

Documentation Requirements

Proper documentation for congenital malformations of the urinary system should include a detailed medical history, comprehensive clinical findings, diagnostic imaging results, and any treatment plans or procedures.

Clinical Information:

  • •Detailed description of the malformation
  • •Impact of the malformation on the patient's health status
  • •Any related symptoms or complications
  • •Results of diagnostic imaging or other tests
  • •Treatment plans or procedures

Supporting Evidence:

  • •Medical history
  • •Physical examination findings
  • •Diagnostic imaging reports
  • •Laboratory test results
Good Documentation Example:

Patient has a congenital malformation of the urinary system, specifically a duplex kidney. This was confirmed through ultrasound imaging. The patient is experiencing recurrent urinary tract infections due to this condition.

Poor Documentation Example:

Patient has a kidney issue.

Common Documentation Errors:

  • âš Not providing enough detail about the malformation
  • âš Failing to document the impact of the malformation on the patient's health
  • âš Not including results of diagnostic imaging or tests
  • âš Not documenting the treatment plan

Range Statistics

5
Total Codes
117
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:17

Coding Complexity

Medium
Complexity Rating

Coding for congenital malformations of the urinary system can be moderately complex. It requires a solid understanding of the urinary system's anatomy and the ability to distinguish between congenital and acquired conditions. Coders must also be able to identify the specific type of malformation and any related complications.

Key Factors:
  • â–¸Understanding the difference between congenital and acquired conditions
  • â–¸Identifying the specific type of malformation
  • â–¸Coding for any related complications
  • â–¸Determining the impact of the condition on the patient's health status
  • â–¸Using additional codes when necessary

Specialty Focus

These codes are primarily used by urologists, nephrologists, and pediatricians. They are also relevant for radiologists who diagnose these conditions through imaging.

Primary Specialties:
Urology
40%
Nephrology
30%
Pediatrics
20%
Radiology
10%
Clinical Scenarios:
  • • A newborn diagnosed with polycystic kidney disease.
  • • A child with recurrent urinary tract infections due to a duplex kidney.
  • • A patient with renal agenesis presenting with hypertension.
  • • A patient with a history of bladder exstrophy presenting for follow-up.

Resources & References

Several resources can help with coding for congenital malformations of the urinary system. These include the official ICD-10-CM guidelines, clinical reference books, and educational materials from professional coding organizations.

Official Guidelines:

  • ICD-10-CM Official Guidelines for Coding and Reporting
  • World Health Organization's ICD-10 Browser
  • National Center for Health Statistics ICD-10-CM Index

Clinical References:

  • Urology Textbooks
  • Nephrology Clinical Guides

Educational Materials:

  • American Academy of Professional Coders (AAPC) resources
  • American Health Information Management Association (AHIMA) resources

Frequently Asked Questions

Can I use a Q70-Q74 code if the patient's condition was corrected surgically?

Yes, if the condition still impacts the patient's health status. If the condition has been completely corrected and no longer affects the patient, use a code from the Z87.7 category to indicate a personal history of a congenital malformation.