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Chapters ENES DE

20Developmental anomalies
Structural developmental anomalies primarily affecting one body system
Structural developmental anomalies of the skeleton
LB73Structural developmental anomalies of spine or bony thorax
LB73.1Structural developmental anomalies of chest wall

LB73.11 category

Bifid rib

Also indexed as

Bifid ribrib bifurcation

Nearby in Structural developmental anomalies of chest wall

LB73.10Poland syndrome
LB73.12Accessory rib
LB73.13Structural developmental anomalies of sternum
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

PreviousLB73.10 — Poland syndrome NextLB73.12 — Accessory rib

Browse ICD-11

01Certain infectious or parasitic diseases
02Neoplasms
03Diseases of the blood or blood-forming organs
04Diseases of the immune system
05Endocrine, nutritional or metabolic diseases
06Mental, behavioural or neurodevelopmental disorders
07Sleep-wake disorders
08Diseases of the nervous system
09Diseases of the visual system
10Diseases of the ear or mastoid process
11Diseases of the circulatory system
12Diseases of the respiratory system
13Diseases of the digestive system
14Diseases of the skin
15Diseases of the musculoskeletal system or connective tissue
16Diseases of the genitourinary system
17Conditions related to sexual health
18Pregnancy, childbirth or the puerperium
19Certain conditions originating in the perinatal period
20Developmental anomalies
21Symptoms, signs or clinical findings, not elsewhere classified
22Injury, poisoning or certain other consequences of external causes
23External causes of morbidity or mortality
24Factors influencing health status or contact with health services
25Codes for special purposes
26Supplementary Chapter Traditional Medicine Conditions
VSupplementary section for functioning assessment
XExtension Codes
LA00-LD0ZStructural developmental anomalies primarily affecting one body system
LD20-LD2ZMultiple developmental anomalies or syndromes
LD40-LD7ZChromosomal anomalies, excluding gene mutations
LD90Conditions with disorders of intellectual development as a relevant clinical feature
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
LB30-LB3ZStructural developmental anomalies of the urinary system
LB40-LB4ZStructural developmental anomalies of the female genital system
LB50-LB5ZStructural developmental anomalies of the male genital system
LB60-LB6ZStructural developmental anomalies of the breast
LB70-LB9ZStructural developmental anomalies of the skeleton
LC00-LC7ZStructural developmental anomalies of the skin
LC80-LC8ZStructural developmental anomalies of the adrenal glands
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
10 more
LB70Structural developmental anomalies of cranium
LB71Structural developmental anomalies of facial bones
LB72Structural developmental anomalies of shoulder girdle
LB73Structural developmental anomalies of spine or bony thorax
LB74Structural developmental anomalies of pelvic girdle
LB75Brachydactyly
LB76Triphalangeal thumb
LB77Hyperphalangy
LB78Polydactyly
16 more
LB73.0Occult spinal dysraphism
LB73.1Structural developmental anomalies of chest wall
LB73.2Structural developmental anomalies of spine
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
LB73.10Poland syndrome
LB73.11Bifid rib
LB73.12Accessory rib
LB73.13Structural developmental anomalies of sternum
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).

Release 2026-01. View this entity in the official WHO ICD-11 browser.

This page reproduces WHO classification content for reference. It is not medical advice and must not be used to diagnose or treat. For coding decisions, consult the official release and your national coding guidelines.

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