Summary & Overview
CPT 0990T: Intrauterine Biodegradable Hydrogel Injection
CPT code 0990T represents a minimally invasive gynecologic procedure in which a catheter is placed through the cervix to deliver a biodegradable hydrogel into the uterus intended to reduce intrauterine scar formation. As a distinct CPT Category III-style numeric code, it captures an emerging uterine-sparing intervention used in select therapeutic contexts. Nationally, this code matters for clinical adoption, coverage policy, and procedural tracking because it reflects an innovation aimed at preventing adhesions that can affect fertility, menstrual function, and gynecologic health.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context and coding definition, typical sites of service, and what stakeholders monitor when integrating a new procedure code into coverage and billing workflows. The publication summarizes available benchmarks where present, highlights common documentation and claims considerations, and outlines policy-related implications for payers and providers. It is intended to inform administrators, coding professionals, and clinicians about coding semantics, the clinical intent of the service, and the types of payment and utilization issues that commonly follow introduction of a novel procedure code.
Billing Code Overview
CPT code 0990T describes a procedure in which a provider inserts a catheter through the cervix into the uterus and injects a biodegradable hydrogel material. The injected hydrogel is designed to break down naturally in the body and may help prevent formation of intrauterine scar tissue.
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Service type: Intrauterine biodegradable hydrogel injection procedure
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Typical site of service: Ambulatory surgical center or hospital outpatient department (procedures performed in an interventional gynecology or minimally invasive surgery setting)
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Clinical & Coding Specifications
Clinical Context
A typical patient is a reproductive-age woman presenting with symptomatic intrauterine adhesions (Asherman syndrome) or at high risk for adhesions after hysteroscopic surgery (e.g., adhesiolysis, myomectomy) or complicated uterine instrumentation. The gynecologist performs hysteroscopic evaluation and lysis of adhesions under sterile conditions in an ambulatory surgery center or hospital outpatient department. After restoring the uterine cavity, the provider places a transcervical catheter into the uterine cavity and injects a biodegradable hydrogel (0990T) to coat the endometrial surfaces. The procedure is performed under sedation or general anesthesia; intraoperative transvaginal ultrasound may be used for guidance. Typical workflow: preoperative assessment and informed consent; anesthesia and positioning; hysteroscopic inspection and operative treatment as indicated; transcervical catheter placement and hydrogel instillation; immediate postoperative observation and discharge with follow-up gynecologic evaluation to assess cavity healing and menstrual function.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the day of a procedure | Use when a distinct E/M visit is documented on the same day as 0990T prior to the procedure |
59 | Distinct procedural service | Use if a separate, distinct procedural service is performed the same day and needs to be distinguished from 0990T |
76 | Repeat procedure or service by same physician | Use when the same hydrogel instillation procedure is repeated later the same day |
77 | Repeat procedure by another physician | Use when a second physician repeats the procedure the same day |
78 | Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period | Use if the patient requires an unplanned return to OR for complications related to the instillation |
79 | Unrelated procedure or service by the same physician during postoperative period | Use when an unrelated procedure is performed during the global period |
GA | Waiver of liability statement on file (Medicare) | Use when an Advance Beneficiary Notice (ABN) is on file because the service may not be covered |
RT | Right side | Not typically applicable but use when laterality reporting policy requires a side modifier for related services |
LT | Left side | Not typically applicable but use when laterality reporting policy requires a side modifier for related services |
XE | Separate encounter, a service that is distinct because it occurred during a separate encounter | Use to indicate the service was furnished at a different encounter from another billed service |
XP | Separate practitioner | Use when a separate practitioner provided a distinct portion of care requiring distinction from the primary provider |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207VP0300X | Obstetrics & Gynecology | General OB/GYNs who perform hysteroscopy and intrauterine procedures |
207VR0400X | Reproductive Endocrinology / Infertility | Specialists treating intrauterine adhesions related to infertility |
208000000X | Family Medicine | Family physicians with advanced gynecologic procedural training (in some settings) |
363L00000X | Pain Medicine | May be involved for anesthesia/sedation in outpatient procedural settings |
261QM0800X | Hospitalist | Hospital-based physicians involved when service performed inpatient or in hospital outpatient department |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
N85.0 | Endometrial polyp | Polyps may be removed hysteroscopically; hydrogel may be placed afterward to reduce adhesion risk |
N85.1 | Endometrial hyperplasia | Patients undergoing intrauterine procedures for endometrial pathology may receive hydrogel to prevent scarring |
N83.2 | Polycystic ovarian syndrome (PCOS) | Included when infertility evaluation leads to hysteroscopic intervention and adhesion prevention |
N85.6 | Endometrial adhesions (Asherman syndrome) | Primary indication for intrauterine anti-adhesion hydrogel application after adhesiolysis |
N93.9 | Abnormal uterine and vaginal bleeding, unspecified | Bleeding disorders that require hysteroscopic evaluation and possible adhesion prevention measures |
O94.89 | Other complications of labor and delivery, not elsewhere classified | Relevant in postpartum intrauterine adhesions where hydrogel may be used after operative management |
N84.0 | Leiomyoma of uterus | Myomectomy or operative hysteroscopy for submucosal fibroids may be followed by hydrogel placement to reduce synechiae formation |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
58555 | Hysteroscopy, diagnostic, with or without collection of specimens; with removal of foreign body | May be performed prior to 0990T for diagnostic inspection and treatment of intrauterine pathology |
58558 | Hysteroscopy, surgical; with removal of intrauterine adhesions (synechiae) | Commonly performed immediately before hydrogel instillation to restore the uterine cavity |
58300 | Insertion of intrauterine device (IUD) | Different procedure but shares transcervical catheterization technique; relevant for counseling and technique comparison |
99201 - 99215 | Office or other outpatient E/M services | Preoperative or postoperative evaluation on the same day as 0990T may require appropriate E/M coding when significant and separately identifiable |
51701 | Insertion of urinary catheter; simple (e.g., Foley) | Used in perioperative management for bladder drainage during anesthesia; adjunctive to procedural workflow |