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MINISTRY OF HEALTH OF VIETNAM |
THE SOCIALIST REPUBLIC OF VIETNAM |
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No. 11/2026/TT-BYT |
Hanoi, May 15, 2026 |
ON THE LIST OF DISEASES FOR WHICH FETAL SEX MAY BE DISCLOSED FOR DIAGNOSTIC AND TREATMENT
Pursuant to the Law on Population No. 113/2025/QH15;
Pursuant to the Law on Medical Examination and Treatment No. 15/2023/QH15;
Pursuant to Decree No. 42/2025/ND-CP dated February 27, 2025 of the Government on functions, tasks, powers and organizational structure of the Ministry of Health of Vietnam;
At the request of the Director General of the Vietnam Population Authority;
The Minister of Health promulgates the Circular on the list of diseases for which fetal sex may be disclosed for diagnostic and treatment.
Article 1. The List of diseases for which fetal sex may be disclosed for diagnostic and treatment
This List of diseases for which fetal sex may be disclosed for diagnostic and treatment as prescribed in clause 3, Article 6 of the Law on Population is attached to this Circular.
1. Determination of fetal sex for diagnostic and treatment means the use of professional medical techniques to identify the fetal sex chromosome pair, sex-determining genes or sex phenotype of the fetus for diagnosing genetic disorders that exhibit different manifestations in males and females.
2. Sex-related diseases for diagnostic and treatment are genetic or congenital diseases, defects or syndromes associated with sex chromosomes or genes that affect the process of sex determination and sex development in which determining the sex of the fetus is significant for disease diagnosis, prognosis, treatment or prevention.
3. Sex-linked genetic disorders are a group of diseases caused by genetic variants located on sex chromosomes.
4. Disorders of sex development (DSDs) are congenital conditions that result in atypical sex development due to abnormalities of the sex chromosomes, gonads, or genital organs.
Article 3. Principles for establishing the List of diseases for which fetal sex may be disclosed for diagnostic and treatment
Diseases included in the List of diseases for which fetal sex may be disclosed for diagnostic and treatment shall satisfy the following principles:
1. There are mechanisms related to sex that have clinical significance for diagnosis, prognosis or decision-making in prenatal or neonatal management including sex-related diseases, sex-linked genetic disorders, abnormalities in the number or structure of sex chromosomes, and disorders of sex development.
2. There are scientific names in Vietnamese that are consistent with ICD-10 codes.
This Circular comes into force from July 01, 2026.
1. The Vietnam Population Authority shall:
a) Take charge and cooperate with relevant units in deploying, providing guidelines and inspecting the implementation of this Circular;
b) Every two years, or when there are professional, technical or legal requirements, the Vietnam Population Authority shall take charge in reviewing and proposing amendments to the List attached to this Circular;
c) Publish the List of diseases for which fetal sex may be disclosed for diagnostic and treatment on the website of the Vietnam Population Authority and the electronic information portal of the Ministry of Health.
2. Within the scope of assigned functions and tasks, Departments and the Ministry Office under the Ministry of Health shall proactively provide guidelines for relevant authorities and units in implementing this Circular.
3. Specialized health authorities under province-level People’s Committees shall direct, provide guidelines and inspect medical examination and treatment establishments under their management in complying with regulations on determination of fetal sex for diagnostic and treatment purposes; and shall handle violations within their authority or propose them to competent authorities for handling in accordance with the laws.
4. Medical examination and treatment establishments may:
a) May inform and disclose the fetal sex for diagnostic and treatment in accordance with the List prescribed in this Circular;
b) Provide counseling before and after performing technical services including information on the scope, significance and limitations of the technical service, as well as the possibility that certain diseases may not be detected during the testing process;
c) Heads of medical examination and treatment establishments are responsible in accordance with the laws if the fetal sex is disclosed for purposes other than diagnosis and treatment, or beyond the scope prescribed in this Circular;
In cases where sex-related genetic diseases, defects or syndromes cannot be detected due to limitations of screening techniques or methods, absence of risk factors, or newly arising variants leading to inability to identify the disease, the failure to provide fetal sex information for diagnostic and treatment purposes shall not be considered a violation of professional regulations.
Authorities, organizations and individuals shall report any issues during the implementation to the Ministry of Health (Vietnam Population Authority) for guidelines and resolution./.
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PP. MINISTER Do Xuan Tuyen |
LIST OF DISEASES FOR WHICH FETAL SEX MAY BE DISCLOSED FOR DIAGNOSTIC AND TREATMENT
(Attached to Circular No. 11 /2026/TT-BYT dated May 15, 2026 of the Minister of Health)
|
No. |
ICD-10 codes |
Name of disease/syndrome |
|
1 |
H35.5 | Hereditary retinal dystrophy |
|
2 |
H90 | Conductive and sensorineural hearing loss |
|
3 |
H90.3 | Sensorineural hearing loss, bilateral |
|
4 |
Q55.8 | Other specified congenital malformations of male genital organs |
|
5 |
D55.0 | Anaemia due to glucose-6-phosphate dehydrogenase [G6PD] deficiency |
|
6 |
D58.1 | Hereditary elliptocytosis |
|
7 |
D58 | Other hereditary haemolytic anaemias |
|
8 |
D61.3 | Idiopathic aplastic anaemia |
|
9 |
D64 | Other anaemias |
|
10 |
D64.0 | Hereditary sideroblastic anaemia |
|
11 |
D66 | Hereditary factor VIII deficiency |
|
12 |
D67 | Hereditary factor IX deficiency |
|
13 |
D68.5 | Primary thrombophilia |
|
14 |
D69.4 | Other primary thrombocytopenia |
|
15 |
D80.5 | Immunodeficiency with increased immunoglobulin M [IgM] |
|
16 |
D81.2 | Severe combined immunodeficiency [SCID] with low or normal B-cell numbers |
|
17 |
D81.8 | Other combined immunodeficiencies |
|
18 |
D81.9 | Combined immunodeficiency, unspecified |
|
19 |
D82.0 | Wiskott-Aldrich syndrome |
|
20 |
D84.1 | Defects in the complement system |
|
21 |
D84.9 | Immunodeficiency, unspecified |
|
22 |
D89.8 | Other specified disorders involving the immune mechanism, not elsewhere classified |
|
23 |
E03 | Other hypothyroidism |
|
24 |
E20.8 | Other hypoparathyroidism |
|
25 |
E22.2 | Syndrome of inappropriate secretion of antidiuretic hormone |
|
26 |
E23.0 | Hypopituitarism |
|
27 |
E25 | Adrenogenital disorders |
|
28 |
E26.8 | Other hyperaldosteronism |
|
29 |
E28.3 | Primary ovarian failure |
|
30 |
E30.1 | Precocious puberty |
|
31 |
E34.5 | Androgen resistance syndrome |
|
32 |
E70.3 | Albinism |
|
33 |
E72.0 | Disorders of amino-acid transport |
|
34 |
E72.4 | Disorders of ornithine metabolism |
|
35 |
E74.0 | Glycogen storage disease |
|
36 |
E74.4 | Disorders of pyruvate metabolism and gluconeogenesis |
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37 |
E75.2 | Other sphingolipidosis |
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38 |
E76.1 | Mucopolysaccharidosis, type II |
|
39 |
E77.8 | Other disorders of glycoprotein metabolism |
|
40 |
E79.1 | Lesch-Nyhan syndrome |
|
41 |
E79.8 | Other disorders of purine and pyrimidine metabolism |
|
42 |
E80.0 | Hereditary erythropoietic porphyria |
|
43 |
E83.3 | Disorders of phosphorus metabolism and phosphatases |
|
44 |
F78 | Other mental retardation |
|
45 |
F79 | Unspecified mental retardation |
|
46 |
F84.2 | Rett syndrome |
|
47 |
G11.4 | Hereditary spastic paraplegia |
|
48 |
G12.1 | Other inherited spinal muscular atrophy |
|
49 |
G40 | Epilepsy |
|
50 |
G60.0 | Hereditary motor and sensory neuropathy |
|
51 |
G71.0 | Muscular dystrophy |
|
52 |
G71.2 | Congenital myopathies |
|
53 |
H26.0 | Infantile, juvenile and presenile cataract |
|
54 |
H31.2 | Hereditary choroidal dystrophy |
|
55 |
H33.1 | Retinoschisis and retinal cysts |
|
56 |
H53.5 | Colour vision deficiencies |
|
57 |
H53.6 | Night blindness |
|
58 |
H55 | Nystagmus and other irregular eye movements |
|
59 |
H90 | Conductive and sensorineural hearing loss |
|
60 |
H90.5 | Sensorineural hearing loss, unspecified |
|
61 |
I42.0 | Dilated cardiomyopathy |
|
62 |
K00 | Disorders of tooth development and eruption |
|
63 |
K00.5 | Hereditary disturbances in tooth structure, not elsewhere classified |
|
64 |
K59.8 | Other specified functional intestinal disorders |
|
65 |
L67.8 | Other hair colour and hair shaft abnormalities |
|
66 |
L85.8 | Other specified epidermal thickening |
|
67 |
L85.9 | Epidermal thickening, unspecified |
|
68 |
L99* | Other disorders of skin and subcutaneous tissue in diseases classified elsewhere |
|
69 |
L99.0* | Amyloidosis of skin (E85.-†) |
|
70 |
N04 | Nephrotic syndrome |
|
71 |
N20.0 | Calculus of kidney |
|
72 |
N25.1 | Nephrogenic diabetes insipidus |
|
73 |
N25.8 | Other disorders resulting from impaired renal tubular function |
|
74 |
N25.9 | Disorder resulting from impaired renal tubular function, unspecified |
|
75 |
N46 | Male infertility |
|
76 |
Q03 | Congenital hydrocephalus |
|
77 |
Q04.3 | Other reduction deformities of brain |
|
78 |
Q04.8 | Other specified congenital malformations of brain |
|
79 |
Q10.3 | Other congenital malformations of eyelid |
|
80 |
Q11.2 | Microphthalmos |
|
81 |
Q24.9 | Congenital malformation of heart, unspecified |
|
82 |
Q34.8 | Other specified congenital malformations of respiratory system |
|
83 |
Q41.8 | Congenital absence, atresia and stenosis of other specified parts of small intestine |
|
84 |
Q50 | Congenital malformations of ovaries, fallopian tubes and broad ligaments |
|
85 |
Q50.3 | Other congenital malformations of ovary |
|
86 |
Q51 | Congenital malformations of uterus and cervix |
|
87 |
Q54 | Hypospadias |
|
88 |
Q54.9 | Hypospadias, unspecified |
|
89 |
Q55 | Other congenital malformations of male genital organs |
|
90 |
Q56 | Indeterminate sex and pseudohermaphroditism |
|
91 |
Q77.3 | Chondrodysplasia punctata |
|
92 |
Q77.7 | Spondyloepiphyseal dysplasia |
|
93 |
Q78.0 | Osteogenesis imperfecta |
|
94 |
Q78.5 | Metaphyseal dysplasia |
|
95 |
Q80.1 | X-linked ichthyosis |
|
96 |
Q82.3 | Incontinentia pigmenti |
|
97 |
Q82.4 | Ectodermal dysplasia (anhidrotic) |
|
98 |
Q82.8 | Other specified congenital malformations of skin |
|
99 |
Q87 | Other specified congenital malformation syndromes affecting multiple systems |
|
100 |
Q87.0 | Congenital malformation syndromes predominantly affecting facial appearance |
|
101 |
Q87.1 | Congenital malformation syndromes predominantly associated with short stature |
|
102 |
Q87.2 | Congenital malformation syndromes predominantly involving limbs |
|
103 |
Q87.3 | Congenital malformation syndromes involving early overgrowth |
|
104 |
Q87.8 | Other specified congenital malformation syndromes, not elsewhere classified |
|
105 |
Q89.3 | Situs inversus |
|
106 |
Q93.5 | Other deletions of part of a chromosome |
|
107 |
Q96 | Turner syndrome |
|
108 |
Q96.0 | Karyotype 45,X |
|
109 |
Q96.1 | Karyotype 46,X iso (Xq) |
|
110 |
Q96.2 | Karyotype 46,X with abnormal sex chromosome, except iso (Xq) |
|
111 |
Q96.3 | Mosaicism, 45,X/46,XX or XY |
|
112 |
Q96.4 | Mosaicism, 45,X/other cell line(s) with abnormal sex chromosome |
|
113 |
Q96.8 | Other variants of Turner syndrome |
|
114 |
Q96.9 | Turner syndrome, unspecified |
|
115 |
Q97 | Other sex chromosome abnormalities, female phenotype, not elsewhere classified |
|
116 |
Q97.0 | Karyotype 47,XXX |
|
117 |
Q97.1 | Female with more than three X chromosomes |
|
118 |
Q97.2 | Mosaicism, lines with various numbers of X chromosomes |
|
119 |
Q97.3 | Female with 46,XY karyotype |
|
120 |
Q97.8 | Other specified sex chromosome abnormalities, female phenotype |
|
121 |
Q97.9 | Sex chromosome abnormality, female phenotype, unspecified |
|
122 |
Q98 | Other sex chromosome abnormalities, male phenotype, not elsewhere classified |
|
123 |
Q98.0 | Klinefelter syndrome karyotype 47,XXY |
|
124 |
Q98.1 | Klinefelter syndrome, male with more than two X chromosomes |
|
125 |
Q98.2 | Klinefelter syndrome, male with 46,XX karyotype |
|
126 |
Q98.3 | Other male with 46,XX karyotype |
|
127 |
Q98.4 | Klinefelter syndrome, unspecified |
|
128 |
Q98.5 | Karyotype 47,XYY |
|
129 |
Q98.6 | Male with structurally abnormal sex chromosome |
|
130 |
Q98.7 | Male with sex chromosome mosaicism |
|
131 |
Q98.8 | Other specified sex chromosome abnormalities, male phenotype |
|
132 |
Q98.9 | Sex chromosome abnormality, male phenotype, unspecified |
|
133 |
Q99.0 | Chimera 46,XX/46,XY |
|
134 |
Q99.1 | 46,XX true hermaphrodite |
|
135 |
Q99.2 | Fragile X chromosome |
|
136 |
Q99.8 | Other specified chromosome abnormalities |
|
137 |
Q99.9 | Chromosomal abnormality, unspecified |
