O41.8X1
Other specified disorders of amniotic fluid and membranes, first trimester
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 6 never code together
O00-O9Achapter
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 7
0 not applicable or unspecified
1 fetus 1 this code
2 fetus 2
3 fetus 3
4 fetus 4
5 fetus 5
9 other fetus
Instructional notes 7
O00-O9Achapter
Notes
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Use additional code
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.Z3A
Index entries leading here 3
- Fibrosis, fibrotic
- Cyst (colloid) (mucous) (simple) (retention)
- Pregnancy (single) (uterine) Z33.1
Alongside this code 3 same parent — O41.8X
Subordinate codes 7
O41.8X10 Oth disrd of amniotic fluid and membrns, first tri, unsp O41.8X11 Oth disrd of amniotic fluid and membrns, first tri, fetus 1 O41.8X12 Oth disrd of amniotic fluid and membrns, first tri, fetus 2 O41.8X13 Oth disrd of amniotic fluid and membrns, first tri, fetus 3 O41.8X14 Oth disrd of amniotic fluid and membrns, first tri, fetus 4 O41.8X15 Oth disrd of amniotic fluid and membrns, first tri, fetus 5 O41.8X19 Oth disrd of amniotic fluid and membrns, first tri, oth
Medications 5
9 Pregnancy Trimester, First drugs 41 Bipolar and Related Disorders drugs 10 Feeding and Eating Disorders drugs 65 Sleep Initiation and Maintenance Disorders drugs 19 Trauma and Stressor Related Disorders drugs
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.