N20 | Calculus of kidney and ureter |

N20.0 | Calculus of kidney |

N20.1 | Calculus of ureter |

N20.2 | Calculus of kidney with calculus of ureter |

N20.9 | Urinary calculus, unspecified |

N21 | Calculus of lower urinary tract |

N21.0 | Calculus in bladder |

N21.1 | Calculus in urethra |

N21.8 | Other lower urinary tract calculus |

N21.9 | Calculus of lower urinary tract, unspecified |

N22 | Calculus of urinary tract in diseases classified elsewhere |

N23 | Unspecified renal colic |