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    v1.0.28
    OpenPayerBilling CodesIntrauterine Biodegradable Hydrogel instillation ProcedureCPT cpt-0990t-intrauterine-hydrogel-injection
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    CPT 0990T: Intrauterine Biodegradable Hydrogel Injection

    CPT code 0990T describes a procedure in which the provider places a catheter through the cervix into the uterus and injects a biodegradable hydrogel material intended to reduce intrauterine scar formation; service type: intrauterine hydrogel injection procedure; typical site of service: outpatient gynecologic procedure room or ambulatory surgery center where transcervical uterine interventions are performed.

    For related coverage guidance, see recent payer policy updates: Prolonged Services for Labor Management, Prolonged Services for Labor Management, Cervical Cancer Screening.

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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.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    58555Hysteroscopy, diagnostic, with or without collection of specimens; with removal of foreign bodyMay be performed prior to 0990T for diagnostic inspection and treatment of intrauterine pathology
    58558Hysteroscopy, surgical; with removal of intrauterine adhesions (synechiae)Commonly performed immediately before hydrogel instillation to restore the uterine cavity
    58300Insertion of intrauterine device (IUD)Different procedure but shares transcervical catheterization technique; relevant for counseling and technique comparison
    99201 - 99215Office or other outpatient E/M servicesPreoperative or postoperative evaluation on the same day as 0990T may require appropriate E/M coding when significant and separately identifiable
    51701Insertion of urinary catheter; simple (e.g., Foley)Used in perioperative management for bladder drainage during anesthesia; adjunctive to procedural workflow

    Related Modifiers

    6 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    208000000XPediatrics PhysicianA pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
    363L00000XNurse Practitioner(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision mak…
    364SW0102XWomen's Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers · Clinical Nurse Specialist
    261QM1101XMilitary and U.S. Coast Guard Ambulatory Procedure Clinic/CenterThat part of a "fixed" (non-temporary, non-deployed) DoD or Coast Guard entity furnishing surgical procedures requiring medically supervised recovery.…
    163WM0102XMaternal Newborn Registered NurseNursing Service Providers · Registered Nurse
    207RH0000XHematology (Internal Medicine) PhysicianAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, cl…
    103GC0700XDeactivated - Clinical Neuropsychologist
    286500000XMilitary HospitalA health care facility operated by the Department of Defense.

    Related ICD-10-CM Codes

    19 rows

    ICD-10-CM CodeDescription
    N72Inflammatory disease of cervix uteri
    N73.9Female pelvic inflammatory disease, unspecified
    N76.0Acute vaginitis
    N76.1Subacute and chronic vaginitis
    N80.8Other endometriosis
    N84.0Polyp of corpus uteri
    N84.1Polyp of cervix uteri
    N85.8Other specified noninflammatory disorders of uterus
    N91.0Primary amenorrhea
    N91.1Secondary amenorrhea

    Showing 1–10 of 19

    Related Payer Policy Updates

    Specialty: Obstetrics/Gynecology1 / 3

    8 rows

    PolicyPayerEffective Date
    Prolonged Services for Labor ManagementPremera Bluecross2027-01-01
    Prolonged Services for Labor ManagementPremera Bluecross2027-01-01
    Cervical Cancer ScreeningOscar Health2026-10-01
    Prenatal Testing for Fetal AneuploidyOscar Health2026-10-01
    Diagnosis of VaginitisOscar Health2026-10-01
    Prenatal Screening (Nongenetic)Oscar Health2026-10-01
    View PDF of Maternal Serum Biomarkers for Prediction of Adverse Obstetric Outcomes, Effective 10/1/2026 in MedicalBlue Cross Blue Shield - Rhode Island2026-10-01
    Maternal Serum Testing for Prediction of Adverse Obstetric OutcomesBluecross Idaho2026-09-01

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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