QA1.71 — Lynch syndrome
Is QA1.71 billable?
Yes — QA1.71 is billable for FY2027. QA1.71 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. QA1.71 may be submitted for encounters from October 1, 2026 through September 30, 2027. QA1.71 is new in FY2027.
QA1.71 at a glance
| Code | QA1.71 |
|---|---|
| Description | Lynch syndrome |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| FY2027 change | New in FY2027 |
Which MS-DRGs does QA1.71 group to?
QA1.71 sits in MDC 23 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 951Other Factors Influencing Health Statusmedical
How is QA1.71 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to QA1.71. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Susceptibility to disease, genetic › hereditary nonpolyposis colorectal cancer
- Syndrome › Lynch
Inclusion terms
Alternative wording in documentation that is classified to QA1.71.
- Hereditary nonpolyposis colorectal cancer susceptibility
- Lynch syndrome due to EPCAM
- Lynch syndrome due to MLH1
- Lynch syndrome due to MSH2
- Lynch syndrome due to MSH6
- Lynch syndrome due to PMS2
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of QA1.71, but a patient may have both at the same time. When documentation supports it, QA1.71 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from QA1
The conditions below are not part of QA1.71, but a patient may have both at the same time. When documentation supports it, QA1.71 and the excluded code may both be reported.
- multiple endocrine neoplasia [MEN] syndromes (E31.2-)
Code also — inherited from QA1
Two codes may be needed to describe the condition fully. Whether QA1.71 is sequenced first depends on the reason for the encounter.