O60.1 vs O60.10X1
O60.1 (Preterm labor with preterm delivery) compared with O60.10X1 (Preterm labor with preterm delivery, unspecified trimester, fetus 1), from the official CMS tabular data.
Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources
Summary
These codes represent different levels of the same hierarchy: O60.1 is the non-billable header that contains O60.10X1, so only O60.10X1 (or a sibling) is reported.
Registry fact- What is different?
Title wording and billing status.O60.10X1’s title adds “unspecified trimester, fetus 1” to the wording the two share (“Preterm labor with preterm delivery”). O60.1 is a non-billable header; O60.10X1 is billable.
Registry fact
- Can these codes be reported together?
Not as a pair.O60.1 is the non-billable header that contains O60.10X1. A header is not reported on a claim, so the choice is O60.10X1 or a sibling that matches the documentation.
Registry fact
- Is there an Excludes1 relationship?
None.Neither entry carries an Excludes1 note that names the other code. O60.1 carries 2 Excludes1 notes and O60.10X1 carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.
Official rule
- Is there an Excludes2 relationship?
None.Neither entry carries an Excludes2 note that names the other code.
Official rule
- Is one more specific?
Yes.O60.10X1 is a subdivision of O60.1 in the tabular hierarchy, so it is the more specific of the two.
Registry fact
- Is one a parent or header code?
Yes.O60.1 is the non-billable header that contains O60.10X1. A header stands for the whole family beneath it and is not reported on a claim.
Registry fact
- Are there sequencing instructions?
None.Neither entry carries a Code First or Use Additional Code note that names the other.
Official rule
- Are there other coding relationships?
None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.
MedCoder-derived
Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels
Can these codes be reported together?
Not as a pair — O60.1 is not reportable. O60.1 is the non-billable category that contains O60.10X1.
A header stands for the whole family of codes beneath it and is not reported on a claim, so the choice is O60.10X1 or a sibling that matches the documentation. No Excludes1/Excludes2 relationship exists between these codes in the official tabular list.
Official guidance behind these answers
Section I.B.2 — Level of Detail in Coding · applies to: O60.1 and O60.10X1
Diagnosis codes are to be used and reported at their highest number of characters available and to the highest level of specificity documented in the medical record. ICD-10-CM diagnosis codes are composed of codes with 3, 4, 5, 6 or 7 characters. Codes with three characters are included in ICD-10-CM as the heading of a category of codes that may be further subdivided by the use of fourth and/or fifth characters and/or sixth characters, which provide greater detail. A three-character code is to be used only if it is not further subdivided. A code is invalid if it has not been coded to the full number of characters required for that code, including the 7th character, if applicable.
ICD-10-CM Official Guidelines FY2027
Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum
Side by side
| O60.1Preterm labor with preterm delivery | O60.10X1Preterm labor with preterm delivery, unspecified trimester, fetus 1 | |
|---|---|---|
| Billing status | Non-billable header Report instead: O60.10X0, O60.10X1, O60.10X2, O60.10X3, O60.10X4 | Billable |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Preterm labor with preterm delivery is a non-billable ICD-10-CM category code (O60.1). | Preterm labor with preterm delivery, unspecified trimester, fetus 1 is a billable ICD-10-CM diagnosis code (O60.10X1). |
| 7th character | One of the following 7th characters is to be assigned to each code under subcategory O60.1. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from subcategory O60.1 that has a 7th character of 1 through 9. | One of the following 7th characters is to be assigned to each code under subcategory O60.1. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from subcategory O60.1 that has a 7th character of 1 through 9. |
| Includes | onset (spontaneous) of labor before 37 completed weeks of gestation | onset (spontaneous) of labor before 37 completed weeks of gestation Preterm labor with delivery NOS |
| Excludes1 | false labor (O47.0-) threatened labor NOS (O47.0-) | false labor (O47.0-) threatened labor NOS (O47.0-) |
Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.
Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources